412431021 has 18 divisors (see below), whose sum is σ = 618624942. Its totient is φ = 274949640.

The previous prime is 412430987. The next prime is 412431031. The reversal of 412431021 is 120134214.

It can be written as a sum of positive squares in only one way, i.e., 410062500 + 2368521 = 20250^2 + 1539^2 .

It is not a de Polignac number, because 412431021 - 2¹⁷ = 412299949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 412430985 and 412431003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (412431031) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 24870 + ... + 37991.

Almost surely, 2^412431021 is an apocalyptic number.

It is an amenable number.

412431021 is a deficient number, since it is larger than the sum of its proper divisors (206193921).

412431021 is an frugal number, since it uses more digits than its factorization.

412431021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62885 (or 62864 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 412431021 is about 20308.3977950010. The cubic root of 412431021 is about 744.3612807019.

Adding to 412431021 its reverse (120134214), we get a palindrome (532565235).

The spelling of 412431021 in words is "four hundred twelve million, four hundred thirty-one thousand, twenty-one".