70491942 has 24 divisors (see below), whose sum is σ = 152914944. Its totient is φ = 23469264.

The previous prime is 70491931. The next prime is 70491943. The reversal of 70491942 is 24919407.

It is a super-2 number, since 2×70491942² = 9938227773862728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70491897 and 70491906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70491943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17883 + ... + 21465.

It is an arithmetic number, because the mean of its divisors is an integer number (6371456).

Almost surely, 2^70491942 is an apocalyptic number.

70491942 is an abundant number, since it is smaller than the sum of its proper divisors (82423002).

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

70491942 is a wasteful number, since it uses less digits than its factorization.

70491942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4684 (or 4681 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 70491942 is about 8395.9479512441. The cubic root of 70491942 is about 413.0917215823.

The spelling of 70491942 in words is "seventy million, four hundred ninety-one thousand, nine hundred forty-two".