621259142 has 24 divisors (see below), whose sum is σ = 1110480840. Its totient is φ = 259758240.

The previous prime is 621259117. The next prime is 621259153. The reversal of 621259142 is 241952126.

It is a junction number, because it is equal to n+sod(n) for n = 621259099 and 621259108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73292 + ... + 81327.

It is an arithmetic number, because the mean of its divisors is an integer number (46270035).

Almost surely, 2^621259142 is an apocalyptic number.

621259142 is a deficient number, since it is larger than the sum of its proper divisors (489221698).

621259142 is a wasteful number, since it uses less digits than its factorization.

621259142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154676 (or 154669 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 621259142 is about 24925.0705515551. The cubic root of 621259142 is about 853.2787514256.

The spelling of 621259142 in words is "six hundred twenty-one million, two hundred fifty-nine thousand, one hundred forty-two".