1145420531 has 2 divisors, whose sum is σ = 1145420532. Its totient is φ = 1145420530.

The previous prime is 1145420489. The next prime is 1145420557. The reversal of 1145420531 is 1350245411.

It is an a-pointer prime, because the next prime (1145420557) can be obtained adding 1145420531 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1145420531 - 2¹⁰ = 1145419507 is a prime.

It is a super-2 number, since 2×1145420531² = 2623976385672643922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1145420531.

It is not a weakly prime, because it can be changed into another prime (1145420231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572710265 + 572710266.

It is an arithmetic number, because the mean of its divisors is an integer number (572710266).

Almost surely, 2^1145420531 is an apocalyptic number.

1145420531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145420531 is an equidigital number, since it uses as much as digits as its factorization.

1145420531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1145420531 is about 33844.0619754781. The cubic root of 1145420531 is about 1046.2970185183.

Adding to 1145420531 its reverse (1350245411), we get a palindrome (2495665942).

The spelling of 1145420531 in words is "one billion, one hundred forty-five million, four hundred twenty thousand, five hundred thirty-one".