402622140 has 24 divisors (see below), whose sum is σ = 1127342160. Its totient is φ = 107365888.

The previous prime is 402622133. The next prime is 402622147. The reversal of 402622140 is 41226204.

It is an interprime number because it is at equal distance from previous prime (402622133) and next prime (402622147).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402622147) 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, 3355125 + ... + 3355244.

It is an arithmetic number, because the mean of its divisors is an integer number (46972590).

Almost surely, 2^402622140 is an apocalyptic number.

It is an amenable number.

402622140 is an abundant number, since it is smaller than the sum of its proper divisors (724720020).

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

402622140 is a wasteful number, since it uses less digits than its factorization.

402622140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6710381 (or 6710379 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 402622140 is about 20065.4464191555. The cubic root of 402622140 is about 738.4128021555.

Adding to 402622140 its reverse (41226204), we get a palindrome (443848344).

The spelling of 402622140 in words is "four hundred two million, six hundred twenty-two thousand, one hundred forty".