70401021 has 8 divisors (see below), whose sum is σ = 94430784. Its totient is φ = 46652640.

The previous prime is 70401017. The next prime is 70401043. The reversal of 70401021 is 12010407.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70401021 - 2² = 70401017 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70401421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69760 + ... + 70761.

It is an arithmetic number, because the mean of its divisors is an integer number (11803848).

Almost surely, 2^70401021 is an apocalyptic number.

It is an amenable number.

70401021 is a deficient number, since it is larger than the sum of its proper divisors (24029763).

70401021 is a wasteful number, since it uses less digits than its factorization.

70401021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140691.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 70401021 is about 8390.5316279721. The cubic root of 70401021 is about 412.9140423055.

Adding to 70401021 its reverse (12010407), we get a palindrome (82411428).

The spelling of 70401021 in words is "seventy million, four hundred one thousand, twenty-one".