401420672 has 16 divisors (see below), whose sum is σ = 799705500. Its totient is φ = 200710272.

The previous prime is 401420653. The next prime is 401420683. The reversal of 401420672 is 276024104.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×401420672² = 322277111817863168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1567922 + ... + 1568177.

Almost surely, 2^401420672 is an apocalyptic number.

It is an amenable number.

401420672 is a deficient number, since it is larger than the sum of its proper divisors (398284828).

401420672 is an equidigital number, since it uses as much as digits as its factorization.

401420672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3136113 (or 3136101 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 401420672 is about 20035.4853198020. The cubic root of 401420672 is about 737.6775691169.

Adding to 401420672 its reverse (276024104), we get a palindrome (677444776).

The spelling of 401420672 in words is "four hundred one million, four hundred twenty thousand, six hundred seventy-two".