401620043 has 64 divisors (see below), whose sum is σ = 517017600. Its totient is φ = 307359360.

The previous prime is 401620039. The next prime is 401620099. The reversal of 401620043 is 340026104.

It is a happy number.

It is not a de Polignac number, because 401620043 - 2² = 401620039 is a prime.

It is a super-2 number, since 2×401620043² = 322597317878643698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401619997 and 401620024.

It is not an unprimeable number, because it can be changed into a prime (401620343) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5994296 + ... + 5994362.

It is an arithmetic number, because the mean of its divisors is an integer number (8078400).

Almost surely, 2^401620043 is an apocalyptic number.

401620043 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

401620043 is a deficient number, since it is larger than the sum of its proper divisors (115397557).

401620043 is a wasteful number, since it uses less digits than its factorization.

401620043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 401620043 is about 20040.4601494077. The cubic root of 401620043 is about 737.7996747476.

Adding to 401620043 its reverse (340026104), we get a palindrome (741646147).

The spelling of 401620043 in words is "four hundred one million, six hundred twenty thousand, forty-three".