401020434 has 24 divisors (see below), whose sum is σ = 870856272. Its totient is φ = 133369080.

The previous prime is 401020423. The next prime is 401020447. The reversal of 401020434 is 434020104.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17172 + ... + 33119.

It is an arithmetic number, because the mean of its divisors is an integer number (36285678).

Almost surely, 2^401020434 is an apocalyptic number.

401020434 is an abundant number, since it is smaller than the sum of its proper divisors (469835838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401020434 is a wasteful number, since it uses less digits than its factorization.

401020434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50742 (or 50739 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 401020434 is about 20025.4946006335. The cubic root of 401020434 is about 737.4323195193.

Adding to 401020434 its reverse (434020104), we get a palindrome (835040538).

The spelling of 401020434 in words is "four hundred one million, twenty thousand, four hundred thirty-four".