142115151 has 4 divisors (see below), whose sum is σ = 189486872. Its totient is φ = 94743432.

The previous prime is 142115123. The next prime is 142115161. The reversal of 142115151 is 151511241.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 142115151 - 2⁹ = 142114639 is a prime.

It is a super-2 number, since 2×142115151² = 40393432287505602, 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 (142115161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23685856 + ... + 23685861.

It is an arithmetic number, because the mean of its divisors is an integer number (47371718).

Almost surely, 2^142115151 is an apocalyptic number.

142115151 is a deficient number, since it is larger than the sum of its proper divisors (47371721).

142115151 is an equidigital number, since it uses as much as digits as its factorization.

142115151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47371720.

The product of its digits is 200, while the sum is 21.

The square root of 142115151 is about 11921.2059373203. The cubic root of 142115151 is about 521.8513287505.

Adding to 142115151 its reverse (151511241), we get a palindrome (293626392).

The spelling of 142115151 in words is "one hundred forty-two million, one hundred fifteen thousand, one hundred fifty-one".