40221402 has 32 divisors (see below), whose sum is σ = 86873472. Its totient is φ = 12341184.

The previous prime is 40221367. The next prime is 40221403. The reversal of 40221402 is 20412204.

It is a super-2 number, since 2×40221402² = 3235522357691208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40221403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50068 + ... + 50864.

It is an arithmetic number, because the mean of its divisors is an integer number (2714796).

Almost surely, 2^40221402 is an apocalyptic number.

40221402 is an abundant number, since it is smaller than the sum of its proper divisors (46652070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40221402 is a wasteful number, since it uses less digits than its factorization.

40221402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 40221402 is about 6342.0345315995. The cubic root of 40221402 is about 342.6250155451.

Adding to 40221402 its reverse (20412204), we get a palindrome (60633606).

The spelling of 40221402 in words is "forty million, two hundred twenty-one thousand, four hundred two".