7142663261 has 32 divisors (see below), whose sum is σ = 7620526080. Its totient is φ = 6686971200.

The previous prime is 7142663249. The next prime is 7142663267. The reversal of 7142663261 is 1623662417.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 7142663261 - 2¹⁰ = 7142662237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7142663267) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26356556 + ... + 26356826.

It is an arithmetic number, because the mean of its divisors is an integer number (238141440).

Almost surely, 2^7142663261 is an apocalyptic number.

7142663261 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

7142663261 is a deficient number, since it is larger than the sum of its proper divisors (477862819).

7142663261 is a wasteful number, since it uses less digits than its factorization.

7142663261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585.

The product of its digits is 72576, while the sum is 38.

The square root of 7142663261 is about 84514.2784445327. The cubic root of 7142663261 is about 1925.8393605910.

The spelling of 7142663261 in words is "seven billion, one hundred forty-two million, six hundred sixty-three thousand, two hundred sixty-one".