70029421 has 32 divisors (see below), whose sum is σ = 92805120. Its totient is φ = 51192000.

The previous prime is 70029397. The next prime is 70029431. The reversal of 70029421 is 12492007.

70029421 = T₁₃₁₀ + T₁₃₁₁ + ... + T₁₃₈₆.

It is a cyclic number.

It is not a de Polignac number, because 70029421 - 2⁹ = 70028909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70029431) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 220755 + ... + 221071.

It is an arithmetic number, because the mean of its divisors is an integer number (2900160).

Almost surely, 2^70029421 is an apocalyptic number.

It is an amenable number.

70029421 is a deficient number, since it is larger than the sum of its proper divisors (22775699).

70029421 is a wasteful number, since it uses less digits than its factorization.

70029421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 70029421 is about 8368.3583216782. The cubic root of 70029421 is about 412.1862611005.

The spelling of 70029421 in words is "seventy million, twenty-nine thousand, four hundred twenty-one".