180407421 has 12 divisors (see below), whose sum is σ = 266944860. Its totient is φ = 117337920.

The previous prime is 180407407. The next prime is 180407431. The reversal of 180407421 is 124704081.

180407421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 46172025 + 134235396 = 6795^2 + 11586^2 .

It is not a de Polignac number, because 180407421 - 2⁹ = 180406909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180407431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 244086 + ... + 244823.

It is an arithmetic number, because the mean of its divisors is an integer number (22245405).

Almost surely, 2^180407421 is an apocalyptic number.

It is an amenable number.

180407421 is a deficient number, since it is larger than the sum of its proper divisors (86537439).

180407421 is a wasteful number, since it uses less digits than its factorization.

180407421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488956 (or 488953 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 180407421 is about 13431.5829670222. The cubic root of 180407421 is about 565.0472939240.

The spelling of 180407421 in words is "one hundred eighty million, four hundred seven thousand, four hundred twenty-one".