78361942 has 16 divisors (see below), whose sum is σ = 126500832. Its totient is φ = 36270720.

The previous prime is 78361901. The next prime is 78361963. The reversal of 78361942 is 24916387.

It is a super-2 number, since 2×78361942² = 12281187908022728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78361895 and 78361904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16818 + ... + 20965.

It is an arithmetic number, because the mean of its divisors is an integer number (7906302).

Almost surely, 2^78361942 is an apocalyptic number.

78361942 is a deficient number, since it is larger than the sum of its proper divisors (48138890).

78361942 is a wasteful number, since it uses less digits than its factorization.

78361942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37863.

The product of its digits is 72576, while the sum is 40.

The square root of 78361942 is about 8852.2280811104. The cubic root of 78361942 is about 427.9257266231.

The spelling of 78361942 in words is "seventy-eight million, three hundred sixty-one thousand, nine hundred forty-two".