141672521 has 4 divisors (see below), whose sum is σ = 141988500. Its totient is φ = 141356544.

The previous prime is 141672499. The next prime is 141672547. The reversal of 141672521 is 125276141.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33512521 + 108160000 = 5789^2 + 10400^2 .

It is a cyclic number.

It is not a de Polignac number, because 141672521 - 2²² = 137478217 is a prime.

It is a super-2 number, since 2×141672521² = 40142206412990882, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (141671521) 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, 157316 + ... + 158213.

It is an arithmetic number, because the mean of its divisors is an integer number (35497125).

Almost surely, 2^141672521 is an apocalyptic number.

It is an amenable number.

141672521 is a deficient number, since it is larger than the sum of its proper divisors (315979).

141672521 is an equidigital number, since it uses as much as digits as its factorization.

141672521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315978.

The product of its digits is 3360, while the sum is 29.

The square root of 141672521 is about 11902.6266428885. The cubic root of 141672521 is about 521.3089815117.

It can be divided in two parts, 1416 and 72521, that added together give a palindrome (73937).

The spelling of 141672521 in words is "one hundred forty-one million, six hundred seventy-two thousand, five hundred twenty-one".