1145472142531 has 4 divisors (see below), whose sum is σ = 1146271496472. Its totient is φ = 1144672788592.

The previous prime is 1145472142501. The next prime is 1145472142547. The reversal of 1145472142531 is 1352412745411.

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

It is a cyclic number.

It is not a de Polignac number, because 1145472142531 - 2²⁷ = 1145337924803 is a prime.

It is a super-2 number, since 2×1145472142531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145472142501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399674821 + ... + 399677686.

It is an arithmetic number, because the mean of its divisors is an integer number (286567874118).

Almost surely, 2^{1145472142531} is an apocalyptic number.

1145472142531 is a deficient number, since it is larger than the sum of its proper divisors (799353941).

1145472142531 is an equidigital number, since it uses as much as digits as its factorization.

1145472142531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799353940.

The product of its digits is 134400, while the sum is 40.

Adding to 1145472142531 its reverse (1352412745411), we get a palindrome (2497884887942).

The spelling of 1145472142531 in words is "one trillion, one hundred forty-five billion, four hundred seventy-two million, one hundred forty-two thousand, five hundred thirty-one".