139242576 has 160 divisors (see below), whose sum is σ = 415973376. Its totient is φ = 39744000.

The previous prime is 139242569. The next prime is 139242577. The reversal of 139242576 is 675242931.

It is a super-2 number, since 2×139242576² = 38776989942231552, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139242577) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 769206 + ... + 769386.

Almost surely, 2^139242576 is an apocalyptic number.

139242576 is a gapful number since it is divisible by the number (16) 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 139242576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207986688).

139242576 is an abundant number, since it is smaller than the sum of its proper divisors (276730800).

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

139242576 is a wasteful number, since it uses less digits than its factorization.

139242576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 275 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 139242576 is about 11800.1091520375. The cubic root of 139242576 is about 518.3113069381.

The spelling of 139242576 in words is "one hundred thirty-nine million, two hundred forty-two thousand, five hundred seventy-six".