1432315421 has 4 divisors (see below), whose sum is σ = 1432396992. Its totient is φ = 1432233852.

The previous prime is 1432315411. The next prime is 1432315427. The reversal of 1432315421 is 1245132341.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1432315421 is a prime.

It is a super-4 number, since 4×1432315421⁴ (a number of 38 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1432315427) 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, 2411 + ... + 53576.

It is an arithmetic number, because the mean of its divisors is an integer number (358099248).

Almost surely, 2^1432315421 is an apocalyptic number.

It is an amenable number.

1432315421 is a deficient number, since it is larger than the sum of its proper divisors (81571).

1432315421 is an equidigital number, since it uses as much as digits as its factorization.

1432315421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81570.

The product of its digits is 2880, while the sum is 26.

The square root of 1432315421 is about 37845.9432568406. The cubic root of 1432315421 is about 1127.2309103286.

Adding to 1432315421 its reverse (1245132341), we get a palindrome (2677447762).

The spelling of 1432315421 in words is "one billion, four hundred thirty-two million, three hundred fifteen thousand, four hundred twenty-one".