621412143 has 32 divisors (see below), whose sum is σ = 940572672. Its totient is φ = 361519200.

The previous prime is 621412109. The next prime is 621412153. The reversal of 621412143 is 341214126.

It is not a de Polignac number, because 621412143 - 2⁸ = 621411887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621412153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127530 + ... + 132312.

It is an arithmetic number, because the mean of its divisors is an integer number (29392896).

Almost surely, 2^621412143 is an apocalyptic number.

621412143 is a deficient number, since it is larger than the sum of its proper divisors (319160529).

621412143 is a wasteful number, since it uses less digits than its factorization.

621412143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4955.

The product of its digits is 1152, while the sum is 24.

The square root of 621412143 is about 24928.1395816054. The cubic root of 621412143 is about 853.3487929362.

Adding to 621412143 its reverse (341214126), we get a palindrome (962626269).

The spelling of 621412143 in words is "six hundred twenty-one million, four hundred twelve thousand, one hundred forty-three".