1245873132 has 72 divisors (see below), whose sum is σ = 3616401152. Its totient is φ = 354261600.

The previous prime is 1245873127. The next prime is 1245873151. The reversal of 1245873132 is 2313785421.

1245873132 is a `hidden beast` number, since 1 + 2 + 458 + 73 + 132 = 666.

It is a super-4 number, since 4×1245873132⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 41457 + ... + 64887.

Almost surely, 2^1245873132 is an apocalyptic number.

1245873132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1245873132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1808200576).

1245873132 is an abundant number, since it is smaller than the sum of its proper divisors (2370528020).

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

1245873132 is a wasteful number, since it uses less digits than its factorization.

1245873132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23659 (or 23654 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 1245873132 is about 35296.9280816334. The cubic root of 1245873132 is about 1076.0305623266.

The spelling of 1245873132 in words is "one billion, two hundred forty-five million, eight hundred seventy-three thousand, one hundred thirty-two".