139942572 has 192 divisors, whose sum is σ = 441262080. Its totient is φ = 33408000.

The previous prime is 139942567. The next prime is 139942577. The reversal of 139942572 is 275249931.

139942572 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (139942567) and next prime (139942577).

It is a Harshad number since it is a multiple of its sum of digits (42).

Its product of digits (136080) is a multiple of the sum of its prime factors (252).

It is not an unprimeable number, because it can be changed into a prime (139942577) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 926697 + ... + 926847.

It is an arithmetic number, because the mean of its divisors is an integer number (2298240).

Almost surely, 2^139942572 is an apocalyptic number.

139942572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139942572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220631040).

139942572 is an abundant number, since it is smaller than the sum of its proper divisors (301319508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139942572 is a wasteful number, since it uses less digits than its factorization.

139942572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 250 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The square root of 139942572 is about 11829.7325413553. The cubic root of 139942572 is about 519.1784017723.

The spelling of 139942572 in words is "one hundred thirty-nine million, nine hundred forty-two thousand, five hundred seventy-two".