70129012 has 12 divisors (see below), whose sum is σ = 129945060. Its totient is φ = 33001856.

The previous prime is 70128997. The next prime is 70129013. The reversal of 70129012 is 21092107.

It can be written as a sum of positive squares in 2 ways, for example, as 30514576 + 39614436 = 5524^2 + 6294^2 .

It is a super-2 number, since 2×70129012² = 9836156648192288, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70129013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515587 + ... + 515722.

It is an arithmetic number, because the mean of its divisors is an integer number (10828755).

Almost surely, 2^70129012 is an apocalyptic number.

It is an amenable number.

70129012 is a deficient number, since it is larger than the sum of its proper divisors (59816048).

70129012 is a wasteful number, since it uses less digits than its factorization.

70129012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031330 (or 1031328 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 70129012 is about 8374.3066578673. The cubic root of 70129012 is about 412.3815628142.

The spelling of 70129012 in words is "seventy million, one hundred twenty-nine thousand, twelve".