78374042 has 8 divisors (see below), whose sum is σ = 120428532. Its totient is φ = 38231200.

The previous prime is 78374033. The next prime is 78374047. The reversal of 78374042 is 24047387.

It can be written as a sum of positive squares in 2 ways, for example, as 77810041 + 564001 = 8821^2 + 751^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78374042² = 12284980918835528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78373993 and 78374011.

It is not an unprimeable number, because it can be changed into a prime (78374047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477809 + ... + 477972.

Almost surely, 2^78374042 is an apocalyptic number.

78374042 is a deficient number, since it is larger than the sum of its proper divisors (42054490).

78374042 is a wasteful number, since it uses less digits than its factorization.

78374042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955824.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 78374042 is about 8852.9114984846. The cubic root of 78374042 is about 427.9477510679.

The spelling of 78374042 in words is "seventy-eight million, three hundred seventy-four thousand, forty-two".