642527276 has 12 divisors (see below), whose sum is σ = 1125961872. Its totient is φ = 320823888.

The previous prime is 642527273. The next prime is 642527279. The reversal of 642527276 is 672725246.

It is an interprime number because it is at equal distance from previous prime (642527273) and next prime (642527279).

It is not an unprimeable number, because it can be changed into a prime (642527273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106640 + ... + 112503.

It is an arithmetic number, because the mean of its divisors is an integer number (93830156).

Almost surely, 2^642527276 is an apocalyptic number.

It is an amenable number.

642527276 is a deficient number, since it is larger than the sum of its proper divisors (483434596).

642527276 is a wasteful number, since it uses less digits than its factorization.

642527276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219880 (or 219878 counting only the distinct ones).

The product of its digits is 282240, while the sum is 41.

The square root of 642527276 is about 25348.1217450130. The cubic root of 642527276 is about 862.9067301308.

The spelling of 642527276 in words is "six hundred forty-two million, five hundred twenty-seven thousand, two hundred seventy-six".