1245023242 has 4 divisors (see below), whose sum is σ = 1867534866. Its totient is φ = 622511620.

The previous prime is 1245023233. The next prime is 1245023303. The reversal of 1245023242 is 2423205421.

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., 992817081 + 252206161 = 31509^2 + 15881^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311255809 + ... + 311255812.

Almost surely, 2^1245023242 is an apocalyptic number.

1245023242 is a deficient number, since it is larger than the sum of its proper divisors (622511624).

1245023242 is an equidigital number, since it uses as much as digits as its factorization.

1245023242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622511623.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 1245023242 is about 35284.8868780956. The cubic root of 1245023242 is about 1075.7858301737.

Adding to 1245023242 its reverse (2423205421), we get a palindrome (3668228663).

The spelling of 1245023242 in words is "one billion, two hundred forty-five million, twenty-three thousand, two hundred forty-two".