142142039 has 8 divisors (see below), whose sum is σ = 156810192. Its totient is φ = 128007360.

The previous prime is 142142029. The next prime is 142142089. The reversal of 142142039 is 930241241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142142039 - 2¹² = 142137943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142141999 and 142142017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142142029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132809 + ... + 133874.

It is an arithmetic number, because the mean of its divisors is an integer number (19601274).

Almost surely, 2^142142039 is an apocalyptic number.

142142039 is a deficient number, since it is larger than the sum of its proper divisors (14668153).

142142039 is a wasteful number, since it uses less digits than its factorization.

142142039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266737.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 142142039 is about 11922.3336222402. Note that the first 3 decimals coincide. The cubic root of 142142039 is about 521.8842378706.

The spelling of 142142039 in words is "one hundred forty-two million, one hundred forty-two thousand, thirty-nine".