400242022 has 8 divisors (see below), whose sum is σ = 614325096. Its totient is φ = 195466992.

The previous prime is 400242013. The next prime is 400242047. The reversal of 400242022 is 220242004.

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

It is a junction number, because it is equal to n+sod(n) for n = 400241987 and 400242005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2326903 + ... + 2327074.

It is an arithmetic number, because the mean of its divisors is an integer number (76790637).

Almost surely, 2^400242022 is an apocalyptic number.

400242022 is a deficient number, since it is larger than the sum of its proper divisors (214083074).

400242022 is a wasteful number, since it uses less digits than its factorization.

400242022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4654022.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 400242022 is about 20006.0496350479. The cubic root of 400242022 is about 736.9548725458.

Adding to 400242022 its reverse (220242004), we get a palindrome (620484026).

The spelling of 400242022 in words is "four hundred million, two hundred forty-two thousand, twenty-two".