245126642 has 4 divisors (see below), whose sum is σ = 367689966. Its totient is φ = 122563320.

The previous prime is 245126633. The next prime is 245126653. The reversal of 245126642 is 246621542.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 239599441 + 5527201 = 15479^2 + 2351^2 .

It is a junction number, because it is equal to n+sod(n) for n = 245126599 and 245126608.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61281659 + ... + 61281662.

Almost surely, 2^245126642 is an apocalyptic number.

245126642 is a deficient number, since it is larger than the sum of its proper divisors (122563324).

245126642 is a wasteful number, since it uses less digits than its factorization.

245126642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122563323.

The product of its digits is 23040, while the sum is 32.

The square root of 245126642 is about 15656.5207501539. The cubic root of 245126642 is about 625.8402709786.

The spelling of 245126642 in words is "two hundred forty-five million, one hundred twenty-six thousand, six hundred forty-two".