245431412242 has 4 divisors (see below), whose sum is σ = 368147118366. Its totient is φ = 122715706120.

The previous prime is 245431412221. The next prime is 245431412273. The reversal of 245431412242 is 242214134542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242214134542 = 2 ⋅121107067271.

It can be written as a sum of positive squares in only one way, i.e., 203410922121 + 42020490121 = 451011^2 + 204989^2 .

It is a junction number, because it is equal to n+sod(n) for n = 245431412198 and 245431412207.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61357853059 + ... + 61357853062.

Almost surely, 2^245431412242 is an apocalyptic number.

245431412242 is a deficient number, since it is larger than the sum of its proper divisors (122715706124).

245431412242 is a wasteful number, since it uses less digits than its factorization.

245431412242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122715706123.

The product of its digits is 61440, while the sum is 34.

Adding to 245431412242 its reverse (242214134542), we get a palindrome (487645546784).

The spelling of 245431412242 in words is "two hundred forty-five billion, four hundred thirty-one million, four hundred twelve thousand, two hundred forty-two".