139343568 has 320 divisors, whose sum is σ = 493301760. Its totient is φ = 32845824.

The previous prime is 139343537. The next prime is 139343599. The reversal of 139343568 is 865343931.

It is an interprime number because it is at equal distance from previous prime (139343537) and next prime (139343599).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1908780 + ... + 1908852.

It is an arithmetic number, because the mean of its divisors is an integer number (1541568).

Almost surely, 2^139343568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139343568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246650880).

139343568 is an abundant number, since it is smaller than the sum of its proper divisors (353958192).

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

139343568 is a wasteful number, since it uses less digits than its factorization.

139343568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 140 counting only the distinct ones).

The product of its digits is 233280, while the sum is 42.

The square root of 139343568 is about 11804.3876588326. The cubic root of 139343568 is about 518.4365862572.

The spelling of 139343568 in words is "one hundred thirty-nine million, three hundred forty-three thousand, five hundred sixty-eight".