1145142620 has 12 divisors (see below), whose sum is σ = 2404799544. Its totient is φ = 458057040.

The previous prime is 1145142611. The next prime is 1145142631. The reversal of 1145142620 is 262415411.

It is a super-2 number, since 2×1145142620² = 2622703240280928800, 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 1145142620.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28628546 + ... + 28628585.

It is an arithmetic number, because the mean of its divisors is an integer number (200399962).

Almost surely, 2^1145142620 is an apocalyptic number.

1145142620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145142620 is an abundant number, since it is smaller than the sum of its proper divisors (1259656924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1145142620 is a wasteful number, since it uses less digits than its factorization.

1145142620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57257140 (or 57257138 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1145142620 is about 33839.9559692385. The cubic root of 1145142620 is about 1046.2123913841.

The spelling of 1145142620 in words is "one billion, one hundred forty-five million, one hundred forty-two thousand, six hundred twenty".