400122023 has 8 divisors (see below), whose sum is σ = 457932960. Its totient is φ = 342473760.

The previous prime is 400121999. The next prime is 400122029. The reversal of 400122023 is 320221004.

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 400122023 - 2⁸ = 400121767 is a prime.

It is a super-2 number, since 2×400122023² = 320195266579225058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400121989 and 400122007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400122029) 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, 35348 + ... + 45273.

It is an arithmetic number, because the mean of its divisors is an integer number (57241620).

Almost surely, 2^400122023 is an apocalyptic number.

400122023 is a deficient number, since it is larger than the sum of its proper divisors (57810937).

400122023 is an equidigital number, since it uses as much as digits as its factorization.

400122023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81337.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 400122023 is about 20003.0503423853. The cubic root of 400122023 is about 736.8812148734.

Adding to 400122023 its reverse (320221004), we get a palindrome (720343027).

The spelling of 400122023 in words is "four hundred million, one hundred twenty-two thousand, twenty-three".