142265643261 has 16 divisors (see below), whose sum is σ = 216791076864. Its totient is φ = 81292652784.

The previous prime is 142265643259. The next prime is 142265643271. The reversal of 142265643261 is 162346562241.

It is a happy number.

It is not a de Polignac number, because 142265643261 - 2¹ = 142265643259 is a prime.

It is a super-2 number, since 2×142265643261² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142265643271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1425580 + ... + 1522106.

It is an arithmetic number, because the mean of its divisors is an integer number (13549442304).

Almost surely, 2^142265643261 is an apocalyptic number.

It is an amenable number.

142265643261 is a deficient number, since it is larger than the sum of its proper divisors (74525433603).

142265643261 is an equidigital number, since it uses as much as digits as its factorization.

142265643261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166720.

The product of its digits is 414720, while the sum is 42.

The spelling of 142265643261 in words is "one hundred forty-two billion, two hundred sixty-five million, six hundred forty-three thousand, two hundred sixty-one".