7142985261 has 12 divisors (see below), whose sum is σ = 10318377888. Its totient is φ = 4761652104.

The previous prime is 7142985257. The next prime is 7142985287. The reversal of 7142985261 is 1625892417.

It is not a de Polignac number, because 7142985261 - 2² = 7142985257 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7142985221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 237286 + ... + 265688.

It is an arithmetic number, because the mean of its divisors is an integer number (859864824).

Almost surely, 2^7142985261 is an apocalyptic number.

It is an amenable number.

7142985261 is a deficient number, since it is larger than the sum of its proper divisors (3175392627).

7142985261 is a wasteful number, since it uses less digits than its factorization.

7142985261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56352 (or 56349 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 7142985261 is about 84516.1834266077. The cubic root of 7142985261 is about 1925.8682998878.

The spelling of 7142985261 in words is "seven billion, one hundred forty-two million, nine hundred eighty-five thousand, two hundred sixty-one".