70423140 has 48 divisors (see below), whose sum is σ = 197995392. Its totient is φ = 18702336.

The previous prime is 70423123. The next prime is 70423153. The reversal of 70423140 is 4132407.

70423140 = T₂₄₅ + T₂₄₆ + ... + T₇₅₈.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13137 + ... + 17703.

It is an arithmetic number, because the mean of its divisors is an integer number (4124904).

Almost surely, 2^70423140 is an apocalyptic number.

It is an amenable number.

70423140 is an abundant number, since it is smaller than the sum of its proper divisors (127572252).

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

70423140 is a wasteful number, since it uses less digits than its factorization.

70423140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4836 (or 4834 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 70423140 is about 8391.8496173371. The cubic root of 70423140 is about 412.9572816848.

Adding to 70423140 its reverse (4132407), we get a palindrome (74555547).

The spelling of 70423140 in words is "seventy million, four hundred twenty-three thousand, one hundred forty".