78903942 has 16 divisors (see below), whose sum is σ = 169947120. Its totient is φ = 24278112.

The previous prime is 78903931. The next prime is 78903947. The reversal of 78903942 is 24930987.

It is a junction number, because it is equal to n+sod(n) for n = 78903894 and 78903903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78903947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505717 + ... + 505872.

It is an arithmetic number, because the mean of its divisors is an integer number (10621695).

Almost surely, 2^78903942 is an apocalyptic number.

78903942 is an abundant number, since it is smaller than the sum of its proper divisors (91043178).

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

78903942 is a wasteful number, since it uses less digits than its factorization.

78903942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011607.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 78903942 is about 8882.7890890193. The cubic root of 78903942 is about 428.9100609649.

The spelling of 78903942 in words is "seventy-eight million, nine hundred three thousand, nine hundred forty-two".