7140981 has 8 divisors (see below), whose sum is σ = 9534304. Its totient is φ = 4754160.

The previous prime is 7140977. The next prime is 7140983. The reversal of 7140981 is 1890417.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7140981 - 2² = 7140977 is a prime.

It is a super-2 number, since 2×7140981² = 101987219284722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7140983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2286 + ... + 4416.

It is an arithmetic number, because the mean of its divisors is an integer number (1191788).

Almost surely, 2^7140981 is an apocalyptic number.

It is an amenable number.

7140981 is a deficient number, since it is larger than the sum of its proper divisors (2393323).

7140981 is a wasteful number, since it uses less digits than its factorization.

7140981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3251.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 7140981 is about 2672.2614018842. The cubic root of 7140981 is about 192.5688155608.

The spelling of 7140981 in words is "seven million, one hundred forty thousand, nine hundred eighty-one".