1145201042 has 4 divisors (see below), whose sum is σ = 1717801566. Its totient is φ = 572600520.

The previous prime is 1145201017. The next prime is 1145201081. The reversal of 1145201042 is 2401025411.

It is a happy number.

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., 865006921 + 280194121 = 29411^2 + 16739^2 .

It is a super-2 number, since 2×1145201042² = 2622970853195771528, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286300259 + ... + 286300262.

Almost surely, 2^1145201042 is an apocalyptic number.

1145201042 is a deficient number, since it is larger than the sum of its proper divisors (572600524).

1145201042 is an equidigital number, since it uses as much as digits as its factorization.

1145201042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572600523.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1145201042 is about 33840.8191685721. The cubic root of 1145201042 is about 1046.2301826996.

Adding to 1145201042 its reverse (2401025411), we get a palindrome (3546226453).

The spelling of 1145201042 in words is "one billion, one hundred forty-five million, two hundred one thousand, forty-two".