139857302 has 12 divisors (see below), whose sum is σ = 227165220. Its totient is φ = 64549368.

The previous prime is 139857293. The next prime is 139857307. The reversal of 139857302 is 203758931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139857307) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 206552 + ... + 207227.

It is an arithmetic number, because the mean of its divisors is an integer number (18930435).

Almost surely, 2^139857302 is an apocalyptic number.

139857302 is a deficient number, since it is larger than the sum of its proper divisors (87307918).

139857302 is a wasteful number, since it uses less digits than its factorization.

139857302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413807 (or 413794 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 139857302 is about 11826.1279377487. The cubic root of 139857302 is about 519.0729315156.

It can be divided in two parts, 13985730 and 2, that multiplied together give a triangular number (27971460 = T₇₄₇₉).

The spelling of 139857302 in words is "one hundred thirty-nine million, eight hundred fifty-seven thousand, three hundred two".