142115715 has 40 divisors (see below), whose sum is σ = 291155040. Its totient is φ = 64965888.

The previous prime is 142115711. The next prime is 142115723. The reversal of 142115715 is 517511241.

It is not a de Polignac number, because 142115715 - 2² = 142115711 is a prime.

It is a super-2 number, since 2×142115715² = 40393752899922450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (142115711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 22230 + ... + 27899.

It is an arithmetic number, because the mean of its divisors is an integer number (7278876).

Almost surely, 2^142115715 is an apocalyptic number.

142115715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

142115715 is an abundant number, since it is smaller than the sum of its proper divisors (149039325).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142115715 is an equidigital number, since it uses as much as digits as its factorization.

142115715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50153 (or 50144 counting only the distinct ones).

The product of its digits is 1400, while the sum is 27.

The square root of 142115715 is about 11921.2295926217. The cubic root of 142115715 is about 521.8520190915.

Adding to 142115715 its reverse (517511241), we get a palindrome (659626956).

The spelling of 142115715 in words is "one hundred forty-two million, one hundred fifteen thousand, seven hundred fifteen".