142904871 has 32 divisors (see below), whose sum is σ = 224352000. Its totient is φ = 89649504.

The previous prime is 142904851. The next prime is 142904891. The reversal of 142904871 is 178409241.

It is an interprime number because it is at equal distance from previous prime (142904851) and next prime (142904891).

It is not a de Polignac number, because 142904871 - 2⁶ = 142904807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142904851) 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 31 ways as a sum of consecutive naturals, for example, 82765 + ... + 84473.

It is an arithmetic number, because the mean of its divisors is an integer number (7011000).

Almost surely, 2^142904871 is an apocalyptic number.

142904871 is a deficient number, since it is larger than the sum of its proper divisors (81447129).

142904871 is a wasteful number, since it uses less digits than its factorization.

142904871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900 (or 1894 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 142904871 is about 11954.2825380698. The cubic root of 142904871 is about 522.8161693811.

The spelling of 142904871 in words is "one hundred forty-two million, nine hundred four thousand, eight hundred seventy-one".