245435421 has 32 divisors (see below), whose sum is σ = 415715328. Its totient is φ = 125087040.

The previous prime is 245435419. The next prime is 245435441. The reversal of 245435421 is 124534542.

It is not a de Polignac number, because 245435421 - 2¹ = 245435419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245435441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2220 + ... + 22266.

It is an arithmetic number, because the mean of its divisors is an integer number (12991104).

Almost surely, 2^245435421 is an apocalyptic number.

245435421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

245435421 is a deficient number, since it is larger than the sum of its proper divisors (170279907).

245435421 is a wasteful number, since it uses less digits than its factorization.

245435421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20121.

The product of its digits is 19200, while the sum is 30.

The square root of 245435421 is about 15666.3786817503. The cubic root of 245435421 is about 626.1029450612.

Adding to 245435421 its reverse (124534542), we get a palindrome (369969963).

The spelling of 245435421 in words is "two hundred forty-five million, four hundred thirty-five thousand, four hundred twenty-one".