70000042 has 32 divisors (see below), whose sum is σ = 122798592. Its totient is φ = 29309424.

The previous prime is 70000037. The next prime is 70000043. The reversal of 70000042 is 24000007.

It is a junction number, because it is equal to n+sod(n) for n = 69999977 and 70000031.

It is not an unprimeable number, because it can be changed into a prime (70000043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124053 + ... + 124615.

It is an arithmetic number, because the mean of its divisors is an integer number (3837456).

Almost surely, 2^70000042 is an apocalyptic number.

70000042 is a deficient number, since it is larger than the sum of its proper divisors (52798550).

70000042 is a wasteful number, since it uses less digits than its factorization.

70000042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762.

The product of its (nonzero) digits is 56, while the sum is 13.

The square root of 70000042 is about 8366.6027753205. The cubic root of 70000042 is about 412.1286124065.

Adding to 70000042 its reverse (24000007), we get a palindrome (94000049).

The spelling of 70000042 in words is "seventy million, forty-two", and thus it is an aban number and an uban number.