401255019 has 16 divisors (see below), whose sum is σ = 648493440. Its totient is φ = 243184680.

The previous prime is 401254993. The next prime is 401255021. The reversal of 401255019 is 910552104.

401255019 is a `hidden beast` number, since 401 + 255 + 0 + 1 + 9 = 666.

It is not a de Polignac number, because 401255019 - 2¹² = 401250923 is a prime.

It is a super-2 number, since 2×401255019² = 322011180545380722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 401254983 and 401255001.

It is not an unprimeable number, because it can be changed into a prime (401255089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 675217 + ... + 675810.

It is an arithmetic number, because the mean of its divisors is an integer number (40530840).

Almost surely, 2^401255019 is an apocalyptic number.

401255019 is a deficient number, since it is larger than the sum of its proper divisors (247238421).

401255019 is a wasteful number, since it uses less digits than its factorization.

401255019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351047 (or 1351041 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 401255019 is about 20031.3509030220. The cubic root of 401255019 is about 737.5760834654.

The spelling of 401255019 in words is "four hundred one million, two hundred fifty-five thousand, nineteen".