70921842 has 16 divisors (see below), whose sum is σ = 142031232. Its totient is φ = 23609360.

The previous prime is 70921819. The next prime is 70921853. The reversal of 70921842 is 24812907.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2634 + ... + 12197.

It is an arithmetic number, because the mean of its divisors is an integer number (8876952).

Almost surely, 2^70921842 is an apocalyptic number.

70921842 is an abundant number, since it is smaller than the sum of its proper divisors (71109390).

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

70921842 is a wasteful number, since it uses less digits than its factorization.

70921842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15633.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 70921842 is about 8421.5106720825. The cubic root of 70921842 is about 413.9297764156.

The spelling of 70921842 in words is "seventy million, nine hundred twenty-one thousand, eight hundred forty-two".