245234413421 has 4 divisors (see below), whose sum is σ = 248189044992. Its totient is φ = 242279781852.

The previous prime is 245234413409. The next prime is 245234413441. The reversal of 245234413421 is 124314432542.

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 a de Polignac number, because none of the positive numbers 2^k-245234413421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245234413441) 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, 1477315661 + ... + 1477315826.

It is an arithmetic number, because the mean of its divisors is an integer number (62047261248).

Almost surely, 2^245234413421 is an apocalyptic number.

It is an amenable number.

245234413421 is a deficient number, since it is larger than the sum of its proper divisors (2954631571).

245234413421 is an equidigital number, since it uses as much as digits as its factorization.

245234413421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2954631570.

The product of its digits is 92160, while the sum is 35.

Adding to 245234413421 its reverse (124314432542), we get a palindrome (369548845963).

The spelling of 245234413421 in words is "two hundred forty-five billion, two hundred thirty-four million, four hundred thirteen thousand, four hundred twenty-one".