7931642742 has 32 divisors (see below), whose sum is σ = 17752694400. Its totient is φ = 2624857704.

The previous prime is 7931642737. The next prime is 7931642743. The reversal of 7931642742 is 2472461397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7931642743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 520848 + ... + 535859.

It is an arithmetic number, because the mean of its divisors is an integer number (554771700).

Almost surely, 2^7931642742 is an apocalyptic number.

7931642742 is an abundant number, since it is smaller than the sum of its proper divisors (9821051658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7931642742 is a wasteful number, since it uses less digits than its factorization.

7931642742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056857 (or 1056851 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 7931642742 is about 89059.7706150201. The cubic root of 7931642742 is about 1994.2872596688.

The spelling of 7931642742 in words is "seven billion, nine hundred thirty-one million, six hundred forty-two thousand, seven hundred forty-two".