142261223511 has 12 divisors (see below), whose sum is σ = 208493033336. Its totient is φ = 86218923120.

The previous prime is 142261223497. The next prime is 142261223513. The reversal of 142261223511 is 115322162241.

It is not a de Polignac number, because 142261223511 - 2²⁵ = 142227669079 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 (142261223513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 195951736 + ... + 195952461.

Almost surely, 2^142261223511 is an apocalyptic number.

142261223511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

142261223511 is a deficient number, since it is larger than the sum of its proper divisors (66231809825).

142261223511 is a wasteful number, since it uses less digits than its factorization.

142261223511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391904222 (or 391904211 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

Adding to 142261223511 its reverse (115322162241), we get a palindrome (257583385752).

The spelling of 142261223511 in words is "one hundred forty-two billion, two hundred sixty-one million, two hundred twenty-three thousand, five hundred eleven".