7902127172 has 12 divisors (see below), whose sum is σ = 13844940396. Its totient is φ = 3946429920.

The previous prime is 7902127171. The next prime is 7902127231. The reversal of 7902127172 is 2717212097.

It can be written as a sum of positive squares in 2 ways, for example, as 1083331396 + 6818795776 = 32914^2 + 82576^2 .

It is a super-2 number, since 2×7902127172² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7902127171) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1154579 + ... + 1161402.

It is an arithmetic number, because the mean of its divisors is an integer number (1153745033).

Almost surely, 2^7902127172 is an apocalyptic number.

It is an amenable number.

7902127172 is a deficient number, since it is larger than the sum of its proper divisors (5942813224).

7902127172 is a wasteful number, since it uses less digits than its factorization.

7902127172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2316838 (or 2316836 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 38.

The square root of 7902127172 is about 88893.9096451495. The cubic root of 7902127172 is about 1991.8104423447.

The spelling of 7902127172 in words is "seven billion, nine hundred two million, one hundred twenty-seven thousand, one hundred seventy-two".