70242791 has 4 divisors (see below), whose sum is σ = 73939800. Its totient is φ = 66545784.

The previous prime is 70242751. The next prime is 70242797. The reversal of 70242791 is 19724207.

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

It is a cyclic number.

It is not a de Polignac number, because 70242791 - 2²⁶ = 3133927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70242797) 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, 1848476 + ... + 1848513.

It is an arithmetic number, because the mean of its divisors is an integer number (18484950).

Almost surely, 2^70242791 is an apocalyptic number.

70242791 is a deficient number, since it is larger than the sum of its proper divisors (3697009).

70242791 is a wasteful number, since it uses less digits than its factorization.

70242791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3697008.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 70242791 is about 8381.0972432015. The cubic root of 70242791 is about 412.6044615757.

Adding to 70242791 its reverse (19724207), we get a palindrome (89966998).

The spelling of 70242791 in words is "seventy million, two hundred forty-two thousand, seven hundred ninety-one".