70400542 has 4 divisors (see below), whose sum is σ = 105600816. Its totient is φ = 35200270.

The previous prime is 70400537. The next prime is 70400569. The reversal of 70400542 is 24500407.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17600134 + ... + 17600137.

It is an arithmetic number, because the mean of its divisors is an integer number (26400204).

Almost surely, 2^70400542 is an apocalyptic number.

70400542 is a deficient number, since it is larger than the sum of its proper divisors (35200274).

70400542 is a wasteful number, since it uses less digits than its factorization.

70400542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35200273.

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 70400542 is about 8390.5030838443. The cubic root of 70400542 is about 412.9131058310.

Adding to 70400542 its reverse (24500407), we get a palindrome (94900949).

The spelling of 70400542 in words is "seventy million, four hundred thousand, five hundred forty-two".