1145124242 has 4 divisors (see below), whose sum is σ = 1717686366. Its totient is φ = 572562120.

The previous prime is 1145124217. The next prime is 1145124251. The reversal of 1145124242 is 2424215411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2424215411 = 137 ⋅17695003.

It can be written as a sum of positive squares in only one way, i.e., 903663721 + 241460521 = 30061^2 + 15539^2 .

It is a super-2 number, since 2×1145124242² = 2622619059232149128, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286281059 + ... + 286281062.

Almost surely, 2^1145124242 is an apocalyptic number.

1145124242 is a deficient number, since it is larger than the sum of its proper divisors (572562124).

1145124242 is an equidigital number, since it uses as much as digits as its factorization.

1145124242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572562123.

The product of its digits is 2560, while the sum is 26.

The square root of 1145124242 is about 33839.6844252425. The cubic root of 1145124242 is about 1046.2067945866.

Adding to 1145124242 its reverse (2424215411), we get a palindrome (3569339653).

The spelling of 1145124242 in words is "one billion, one hundred forty-five million, one hundred twenty-four thousand, two hundred forty-two".