70424402 has 4 divisors (see below), whose sum is σ = 105636606. Its totient is φ = 35212200.

The previous prime is 70424399. The next prime is 70424407. The reversal of 70424402 is 20442407.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20442407 = 1877 ⋅10891.

It can be written as a sum of positive squares in only one way, i.e., 69538921 + 885481 = 8339^2 + 941^2 .

It is not an unprimeable number, because it can be changed into a prime (70424407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17606099 + ... + 17606102.

Almost surely, 2^70424402 is an apocalyptic number.

70424402 is a deficient number, since it is larger than the sum of its proper divisors (35212204).

70424402 is a wasteful number, since it uses less digits than its factorization.

70424402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35212203.

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 70424402 is about 8391.9248090054. The cubic root of 70424402 is about 412.9597484354.

Adding to 70424402 its reverse (20442407), we get a palindrome (90866809).

The spelling of 70424402 in words is "seventy million, four hundred twenty-four thousand, four hundred two".