7142940 has 72 divisors (see below), whose sum is σ = 24766560. Its totient is φ = 1632384.

The previous prime is 7142939. The next prime is 7142951. The reversal of 7142940 is 492417.

It is a happy number.

It is a super-3 number, since 3×7142940³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1575 + ... + 4094.

It is an arithmetic number, because the mean of its divisors is an integer number (343980).

Almost surely, 2^7142940 is an apocalyptic number.

7142940 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7142940 is an abundant number, since it is smaller than the sum of its proper divisors (17623620).

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

7142940 is a wasteful number, since it uses less digits than its factorization.

7142940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5691 (or 5686 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 7142940 is about 2672.6279202313. The cubic root of 7142940 is about 192.5864232172.

The spelling of 7142940 in words is "seven million, one hundred forty-two thousand, nine hundred forty".