400154043 has 8 divisors (see below), whose sum is σ = 533741056. Its totient is φ = 266668200.

The previous prime is 400153997. The next prime is 400154047. The reversal of 400154043 is 340451004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-400154043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400154047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15523 + ... + 32268.

It is an arithmetic number, because the mean of its divisors is an integer number (66717632).

Almost surely, 2^400154043 is an apocalyptic number.

400154043 is a deficient number, since it is larger than the sum of its proper divisors (133587013).

400154043 is a wasteful number, since it uses less digits than its factorization.

400154043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50585.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 400154043 is about 20003.8507043019. The cubic root of 400154043 is about 736.9008707998.

The spelling of 400154043 in words is "four hundred million, one hundred fifty-four thousand, forty-three".