141554021 has 4 divisors (see below), whose sum is σ = 161776032. Its totient is φ = 121332012.

The previous prime is 141554003. The next prime is 141554057. The reversal of 141554021 is 120455141.

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 a cyclic number.

It is not a de Polignac number, because 141554021 - 2⁶ = 141553957 is a prime.

It is a super-2 number, since 2×141554021² = 40075081722536882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141554071) 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, 10110995 + ... + 10111008.

It is an arithmetic number, because the mean of its divisors is an integer number (40444008).

Almost surely, 2^141554021 is an apocalyptic number.

It is an amenable number.

141554021 is a deficient number, since it is larger than the sum of its proper divisors (20222011).

141554021 is an equidigital number, since it uses as much as digits as its factorization.

141554021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20222010.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 141554021 is about 11897.6477086859. The cubic root of 141554021 is about 521.1635937646.

The spelling of 141554021 in words is "one hundred forty-one million, five hundred fifty-four thousand, twenty-one".