40400122 has 16 divisors (see below), whose sum is σ = 69422400. Its totient is φ = 17273088.

The previous prime is 40400093. The next prime is 40400123. The reversal of 40400122 is 22100404.

It is a super-2 number, since 2×40400122² = 3264339715229768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40400123) 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, 3073 + ... + 9499.

It is an arithmetic number, because the mean of its divisors is an integer number (4338900).

Almost surely, 2^40400122 is an apocalyptic number.

40400122 is a deficient number, since it is larger than the sum of its proper divisors (29022278).

40400122 is a wasteful number, since it uses less digits than its factorization.

40400122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6885.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 40400122 is about 6356.1090299019. The cubic root of 40400122 is about 343.1317397203.

Adding to 40400122 its reverse (22100404), we get a palindrome (62500526).

The spelling of 40400122 in words is "forty million, four hundred thousand, one hundred twenty-two".