142904129 has 4 divisors (see below), whose sum is σ = 149117376. Its totient is φ = 136690884.

The previous prime is 142904107. The next prime is 142904131. The reversal of 142904129 is 921409241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142904129 - 2¹² = 142900033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142904095 and 142904104.

It is not an unprimeable number, because it can be changed into a prime (142904429) 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, 3106589 + ... + 3106634.

It is an arithmetic number, because the mean of its divisors is an integer number (37279344).

Almost surely, 2^142904129 is an apocalyptic number.

It is an amenable number.

142904129 is a deficient number, since it is larger than the sum of its proper divisors (6213247).

142904129 is an equidigital number, since it uses as much as digits as its factorization.

142904129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6213246.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 142904129 is about 11954.2515031264. The cubic root of 142904129 is about 522.8152645128.

The spelling of 142904129 in words is "one hundred forty-two million, nine hundred four thousand, one hundred twenty-nine".