70424421 has 32 divisors (see below), whose sum is σ = 102187008. Its totient is φ = 42981120.

The previous prime is 70424407. The next prime is 70424423. The reversal of 70424421 is 12442407.

It is not a de Polignac number, because 70424421 - 2¹⁸ = 70162277 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70424391 and 70424400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70424423) 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 in 31 ways as a sum of consecutive naturals, for example, 537526 + ... + 537656.

It is an arithmetic number, because the mean of its divisors is an integer number (3193344).

Almost surely, 2^70424421 is an apocalyptic number.

It is an amenable number.

70424421 is a deficient number, since it is larger than the sum of its proper divisors (31762587).

70424421 is a wasteful number, since it uses less digits than its factorization.

70424421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361.

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 70424421 is about 8391.9259410460. The cubic root of 70424421 is about 412.9597855733.

Adding to 70424421 its reverse (12442407), we get a palindrome (82866828).

The spelling of 70424421 in words is "seventy million, four hundred twenty-four thousand, four hundred twenty-one".