421154143 has 8 divisors (see below), whose sum is σ = 426282480. Its totient is φ = 416044800.

The previous prime is 421154137. The next prime is 421154159. The reversal of 421154143 is 341451124.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421154143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421194143) 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, 42703 + ... + 51631.

It is an arithmetic number, because the mean of its divisors is an integer number (53285310).

Almost surely, 2^421154143 is an apocalyptic number.

421154143 is a deficient number, since it is larger than the sum of its proper divisors (5128337).

421154143 is a wasteful number, since it uses less digits than its factorization.

421154143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9497.

The product of its digits is 1920, while the sum is 25.

The square root of 421154143 is about 20522.0404199972. The cubic root of 421154143 is about 749.5725819462.

The spelling of 421154143 in words is "four hundred twenty-one million, one hundred fifty-four thousand, one hundred forty-three".