7940100542 has 32 divisors (see below), whose sum is σ = 13231641600. Its totient is φ = 3543248800.

The previous prime is 7940100527. The next prime is 7940100577. The reversal of 7940100542 is 2450010497.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 7940100499 and 7940100508.

It is a congruent number.

It is an unprimeable number.

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, 362684 + ... + 383952.

It is an arithmetic number, because the mean of its divisors is an integer number (413488800).

Almost surely, 2^7940100542 is an apocalyptic number.

7940100542 is a deficient number, since it is larger than the sum of its proper divisors (5291541058).

7940100542 is a wasteful number, since it uses less digits than its factorization.

7940100542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21592.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 7940100542 is about 89107.2418044684. The cubic root of 7940100542 is about 1994.9958682754.

The spelling of 7940100542 in words is "seven billion, nine hundred forty million, one hundred thousand, five hundred forty-two".