642268030 has 16 divisors (see below), whose sum is σ = 1173338640. Its totient is φ = 253072512.

The previous prime is 642267991. The next prime is 642268037. The reversal of 642268030 is 30862246.

It is a super-3 number, since 3×642268030³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 642267983 and 642268001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642268037) 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, 478635 + ... + 479974.

It is an arithmetic number, because the mean of its divisors is an integer number (73333665).

Almost surely, 2^642268030 is an apocalyptic number.

642268030 is a deficient number, since it is larger than the sum of its proper divisors (531070610).

642268030 is a wasteful number, since it uses less digits than its factorization.

642268030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958683.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 642268030 is about 25343.0075168674. The cubic root of 642268030 is about 862.7906597216.

The spelling of 642268030 in words is "six hundred forty-two million, two hundred sixty-eight thousand, thirty".