42154262121 has 8 divisors (see below), whose sum is σ = 57158321760. Its totient is φ = 27626521952.

The previous prime is 42154262089. The next prime is 42154262131. The reversal of 42154262121 is 12126245124.

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 42154262121 - 2⁵ = 42154262089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42154262131) 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, 119079660 + ... + 119080013.

It is an arithmetic number, because the mean of its divisors is an integer number (7144790220).

Almost surely, 2^42154262121 is an apocalyptic number.

It is an amenable number.

42154262121 is a deficient number, since it is larger than the sum of its proper divisors (15004059639).

42154262121 is a wasteful number, since it uses less digits than its factorization.

42154262121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238159735.

The product of its digits is 7680, while the sum is 30.

The spelling of 42154262121 in words is "forty-two billion, one hundred fifty-four million, two hundred sixty-two thousand, one hundred twenty-one".