7142930 has 16 divisors (see below), whose sum is σ = 12927384. Its totient is φ = 2841600.

The previous prime is 7142929. The next prime is 7142939. The reversal of 7142930 is 392417.

It can be written as a sum of positive squares in 4 ways, for example, as 4541161 + 2601769 = 2131^2 + 1613^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7142930.

It is not an unprimeable number, because it can be changed into a prime (7142939) 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 7 ways as a sum of consecutive naturals, for example, 80 + ... + 3780.

Almost surely, 2^7142930 is an apocalyptic number.

7142930 is a deficient number, since it is larger than the sum of its proper divisors (5784454).

7142930 is a wasteful number, since it uses less digits than its factorization.

7142930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 7142930 is about 2672.6260494128. The cubic root of 7142930 is about 192.5863333445.

The spelling of 7142930 in words is "seven million, one hundred forty-two thousand, nine hundred thirty".