142115331 has 4 divisors (see below), whose sum is σ = 189487112. Its totient is φ = 94743552.

The previous prime is 142115317. The next prime is 142115333. The reversal of 142115331 is 133511241.

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

It is not a de Polignac number, because 142115331 - 2⁷ = 142115203 is a prime.

It is a super-2 number, since 2×142115331² = 40393534610479122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142115298 and 142115307.

It is not an unprimeable number, because it can be changed into a prime (142115333) 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, 23685886 + ... + 23685891.

It is an arithmetic number, because the mean of its divisors is an integer number (47371778).

Almost surely, 2^142115331 is an apocalyptic number.

142115331 is a deficient number, since it is larger than the sum of its proper divisors (47371781).

142115331 is an equidigital number, since it uses as much as digits as its factorization.

142115331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47371780.

The product of its digits is 360, while the sum is 21.

The square root of 142115331 is about 11921.2134868897. The cubic root of 142115331 is about 521.8515490723.

Adding to 142115331 its reverse (133511241), we get a palindrome (275626572).

The spelling of 142115331 in words is "one hundred forty-two million, one hundred fifteen thousand, three hundred thirty-one".