400426043 has 8 divisors (see below), whose sum is σ = 403560000. Its totient is φ = 397302408.

The previous prime is 400426003. The next prime is 400426051. The reversal of 400426043 is 340624004.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 400426043 - 2²⁰ = 399377467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400426003) 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, 87080 + ... + 91562.

It is an arithmetic number, because the mean of its divisors is an integer number (50445000).

Almost surely, 2^400426043 is an apocalyptic number.

400426043 is a deficient number, since it is larger than the sum of its proper divisors (3133957).

400426043 is a wasteful number, since it uses less digits than its factorization.

400426043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5161.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 400426043 is about 20010.6482403744. The cubic root of 400426043 is about 737.0677995469.

The spelling of 400426043 in words is "four hundred million, four hundred twenty-six thousand, forty-three".