128615942 has 32 divisors (see below), whose sum is σ = 238436352. Its totient is φ = 50668704.

The previous prime is 128615933. The next prime is 128615951. The reversal of 128615942 is 249516821.

It is an interprime number because it is at equal distance from previous prime (128615933) and next prime (128615951).

It is a junction number, because it is equal to n+sod(n) for n = 128615896 and 128615905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46523 + ... + 49209.

It is an arithmetic number, because the mean of its divisors is an integer number (7451136).

Almost surely, 2^128615942 is an apocalyptic number.

128615942 is a deficient number, since it is larger than the sum of its proper divisors (109820410).

128615942 is a wasteful number, since it uses less digits than its factorization.

128615942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2972.

The product of its digits is 34560, while the sum is 38.

The square root of 128615942 is about 11340.8968781133. The cubic root of 128615942 is about 504.7754999901.

The spelling of 128615942 in words is "one hundred twenty-eight million, six hundred fifteen thousand, nine hundred forty-two".