402424143 has 32 divisors (see below), whose sum is σ = 613654272. Its totient is φ = 232377600.

The previous prime is 402424133. The next prime is 402424151. The reversal of 402424143 is 341424204.

It is a happy number.

It is not a de Polignac number, because 402424143 - 2⁸ = 402423887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402424103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54721 + ... + 61637.

It is an arithmetic number, because the mean of its divisors is an integer number (19176696).

Almost surely, 2^402424143 is an apocalyptic number.

402424143 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

402424143 is a deficient number, since it is larger than the sum of its proper divisors (211230129).

402424143 is a wasteful number, since it uses less digits than its factorization.

402424143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7015.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 402424143 is about 20060.5120323485. The cubic root of 402424143 is about 738.2917395200.

Adding to 402424143 its reverse (341424204), we get a palindrome (743848347).

The spelling of 402424143 in words is "four hundred two million, four hundred twenty-four thousand, one hundred forty-three".