70100042 has 4 divisors (see below), whose sum is σ = 105150066. Its totient is φ = 35050020.

The previous prime is 70100003. The next prime is 70100053. The reversal of 70100042 is 24000107.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 52113961 + 17986081 = 7219^2 + 4241^2 .

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 as a sum of consecutive naturals, namely, 17525009 + ... + 17525012.

Almost surely, 2^70100042 is an apocalyptic number.

70100042 is a deficient number, since it is larger than the sum of its proper divisors (35050024).

70100042 is a wasteful number, since it uses less digits than its factorization.

70100042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35050023.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 70100042 is about 8372.5767837626. The cubic root of 70100042 is about 412.3247706300.

Adding to 70100042 its reverse (24000107), we get a palindrome (94100149).

The spelling of 70100042 in words is "seventy million, one hundred thousand, forty-two".