7140249930 has 48 divisors (see below), whose sum is σ = 18836106912. Its totient is φ = 1730968800.

The previous prime is 7140249929. The next prime is 7140249937. The reversal of 7140249930 is 399420417.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (7140249937) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 979876 + ... + 987135.

It is an arithmetic number, because the mean of its divisors is an integer number (392418894).

Almost surely, 2^7140249930 is an apocalyptic number.

7140249930 is an abundant number, since it is smaller than the sum of its proper divisors (11695856982).

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

7140249930 is a wasteful number, since it uses less digits than its factorization.

7140249930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967043 (or 1967032 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 7140249930 is about 84499.9995857988. Note that the first 3 decimals coincide. The cubic root of 7140249930 is about 1925.6224381721.

The spelling of 7140249930 in words is "seven billion, one hundred forty million, two hundred forty-nine thousand, nine hundred thirty".