1245291072 has 56 divisors (see below), whose sum is σ = 3488655456. Its totient is φ = 390678528.

The previous prime is 1245291053. The next prime is 1245291077. The reversal of 1245291072 is 2701925421.

It is not an unprimeable number, because it can be changed into a prime (1245291077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187498 + ... + 194025.

Almost surely, 2^1245291072 is an apocalyptic number.

1245291072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1245291072 is an abundant number, since it is smaller than the sum of its proper divisors (2243364384).

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

1245291072 is a wasteful number, since it uses less digits than its factorization.

1245291072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381555 (or 381545 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 1245291072 is about 35288.6819249459. The cubic root of 1245291072 is about 1075.8629658316.

The spelling of 1245291072 in words is "one billion, two hundred forty-five million, two hundred ninety-one thousand, seventy-two".