1145492420 has 12 divisors (see below), whose sum is σ = 2405534124. Its totient is φ = 458196960.

The previous prime is 1145492417. The next prime is 1145492423. The reversal of 1145492420 is 242945411.

It is an interprime number because it is at equal distance from previous prime (1145492417) and next prime (1145492423).

It can be written as a sum of positive squares in 2 ways, for example, as 343583296 + 801909124 = 18536^2 + 28318^2 .

It is not an unprimeable number, because it can be changed into a prime (1145492423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28637291 + ... + 28637330.

It is an arithmetic number, because the mean of its divisors is an integer number (200461177).

Almost surely, 2^1145492420 is an apocalyptic number.

1145492420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145492420 is an abundant number, since it is smaller than the sum of its proper divisors (1260041704).

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

1145492420 is a wasteful number, since it uses less digits than its factorization.

1145492420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57274630 (or 57274628 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 1145492420 is about 33845.1240210462. The cubic root of 1145492420 is about 1046.3189073270.

The spelling of 1145492420 in words is "one billion, one hundred forty-five million, four hundred ninety-two thousand, four hundred twenty".