142154621 has 8 divisors (see below), whose sum is σ = 162792000. Its totient is φ = 121599648.

The previous prime is 142154591. The next prime is 142154633. The reversal of 142154621 is 126451241.

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

It is a cyclic number.

It is not a de Polignac number, because 142154621 - 2⁶ = 142154557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142154521) 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, 16856 + ... + 23841.

It is an arithmetic number, because the mean of its divisors is an integer number (20349000).

Almost surely, 2^142154621 is an apocalyptic number.

It is an amenable number.

142154621 is a deficient number, since it is larger than the sum of its proper divisors (20637379).

142154621 is an equidigital number, since it uses as much as digits as its factorization.

142154621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41203.

The product of its digits is 1920, while the sum is 26.

The square root of 142154621 is about 11922.8612757173. The cubic root of 142154621 is about 521.8996359747.

The spelling of 142154621 in words is "one hundred forty-two million, one hundred fifty-four thousand, six hundred twenty-one".