401870541 has 4 divisors (see below), whose sum is σ = 535827392. Its totient is φ = 267913692.

The previous prime is 401870537. The next prime is 401870543. The reversal of 401870541 is 145078104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 401870541 - 2² = 401870537 is a prime.

It is a super-2 number, since 2×401870541² = 322999863447265362, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 401870499 and 401870508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401870543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66978421 + ... + 66978426.

It is an arithmetic number, because the mean of its divisors is an integer number (133956848).

Almost surely, 2^401870541 is an apocalyptic number.

It is an amenable number.

401870541 is a deficient number, since it is larger than the sum of its proper divisors (133956851).

401870541 is a wasteful number, since it uses less digits than its factorization.

401870541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133956850.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 401870541 is about 20046.7089817755. The cubic root of 401870541 is about 737.9530360608.

The spelling of 401870541 in words is "four hundred one million, eight hundred seventy thousand, five hundred forty-one".