143154021 has 4 divisors (see below), whose sum is σ = 190872032. Its totient is φ = 95436012.

The previous prime is 143154017. The next prime is 143154023. The reversal of 143154021 is 120451341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 143154021 - 2² = 143154017 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 (143154023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23859001 + ... + 23859006.

It is an arithmetic number, because the mean of its divisors is an integer number (47718008).

Almost surely, 2^143154021 is an apocalyptic number.

It is an amenable number.

143154021 is a deficient number, since it is larger than the sum of its proper divisors (47718011).

143154021 is an equidigital number, since it uses as much as digits as its factorization.

143154021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47718010.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 143154021 is about 11964.6989514989. The cubic root of 143154021 is about 523.1198306437.

It can be divided in two parts, 14315 and 4021, that added together give a triangular number (18336 = T₁₉₁).

The spelling of 143154021 in words is "one hundred forty-three million, one hundred fifty-four thousand, twenty-one".