70421078 has 32 divisors (see below), whose sum is σ = 135668736. Its totient is φ = 26646048.

The previous prime is 70421069. The next prime is 70421083. The reversal of 70421078 is 87012407.

It is a self number, because there is not a number n which added to its sum of digits gives 70421078.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4226 + ... + 12597.

It is an arithmetic number, because the mean of its divisors is an integer number (4239648).

Almost surely, 2^70421078 is an apocalyptic number.

70421078 is a deficient number, since it is larger than the sum of its proper divisors (65247658).

70421078 is a wasteful number, since it uses less digits than its factorization.

70421078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16868.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 70421078 is about 8391.7267591360. The cubic root of 70421078 is about 412.9532511619.

The spelling of 70421078 in words is "seventy million, four hundred twenty-one thousand, seventy-eight".