70491242 has 4 divisors (see below), whose sum is σ = 105736866. Its totient is φ = 35245620.

The previous prime is 70491229. The next prime is 70491247. The reversal of 70491242 is 24219407.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 44368921 + 26122321 = 6661^2 + 5111^2 .

It is not an unprimeable number, because it can be changed into a prime (70491247) by changing a digit.

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 as a sum of consecutive naturals, namely, 17622809 + ... + 17622812.

Almost surely, 2^70491242 is an apocalyptic number.

70491242 is a deficient number, since it is larger than the sum of its proper divisors (35245624).

70491242 is a wasteful number, since it uses less digits than its factorization.

70491242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35245623.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 70491242 is about 8395.9062643648. The cubic root of 70491242 is about 413.0903542148.

The spelling of 70491242 in words is "seventy million, four hundred ninety-one thousand, two hundred forty-two".