245142022 has 4 divisors (see below), whose sum is σ = 367713036. Its totient is φ = 122571010.

The previous prime is 245142019. The next prime is 245142031. The reversal of 245142022 is 220241542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 220241542 = 2 ⋅110120771.

It is a super-2 number, since 2×245142022² = 120189221900496968, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 245141984 and 245142002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61285504 + ... + 61285507.

It is an arithmetic number, because the mean of its divisors is an integer number (91928259).

Almost surely, 2^245142022 is an apocalyptic number.

245142022 is a deficient number, since it is larger than the sum of its proper divisors (122571014).

245142022 is a wasteful number, since it uses less digits than its factorization.

245142022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122571013.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 245142022 is about 15657.0119116005. The cubic root of 245142022 is about 625.8533597531.

Adding to 245142022 its reverse (220241542), we get a palindrome (465383564).

The spelling of 245142022 in words is "two hundred forty-five million, one hundred forty-two thousand, twenty-two".