142921597 has 16 divisors (see below), whose sum is σ = 178794112. Its totient is φ = 111222720.

The previous prime is 142921589. The next prime is 142921619. The reversal of 142921597 is 795129241.

It is a happy number.

It is not a de Polignac number, because 142921597 - 2³ = 142921589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142921577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7323 + ... + 18424.

It is an arithmetic number, because the mean of its divisors is an integer number (11174632).

Almost surely, 2^142921597 is an apocalyptic number.

It is an amenable number.

142921597 is a deficient number, since it is larger than the sum of its proper divisors (35872515).

142921597 is a wasteful number, since it uses less digits than its factorization.

142921597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25828.

The product of its digits is 45360, while the sum is 40.

The square root of 142921597 is about 11954.9820995265. The cubic root of 142921597 is about 522.8365658916.

The spelling of 142921597 in words is "one hundred forty-two million, nine hundred twenty-one thousand, five hundred ninety-seven".