70042420 has 48 divisors (see below), whose sum is σ = 168577920. Its totient is φ = 23946624.

The previous prime is 70042409. The next prime is 70042447. The reversal of 70042420 is 2424007.

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, 94411 + ... + 95149.

It is an arithmetic number, because the mean of its divisors is an integer number (3512040).

Almost surely, 2^70042420 is an apocalyptic number.

70042420 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

70042420 is an abundant number, since it is smaller than the sum of its proper divisors (98535500).

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

70042420 is a wasteful number, since it uses less digits than its factorization.

70042420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432 (or 1430 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 70042420 is about 8369.1349612729. The cubic root of 70042420 is about 412.2117631331.

Adding to 70042420 its reverse (2424007), we get a palindrome (72466427).

The spelling of 70042420 in words is "seventy million, forty-two thousand, four hundred twenty".