1245424572 has 216 divisors, whose sum is σ = 3857468160. Its totient is φ = 350269920.

The previous prime is 1245424547. The next prime is 1245424577. The reversal of 1245424572 is 2754245421.

1245424572 is a `hidden beast` number, since 1 + 2 + 4 + 542 + 45 + 72 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245424577) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3762447 + ... + 3762777.

Almost surely, 2^1245424572 is an apocalyptic number.

1245424572 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 1245424572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1928734080).

1245424572 is an abundant number, since it is smaller than the sum of its proper divisors (2612043588).

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

1245424572 is a wasteful number, since it uses less digits than its factorization.

1245424572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 422 counting only the distinct ones).

The product of its digits is 89600, while the sum is 36.

The square root of 1245424572 is about 35290.5734155737. The cubic root of 1245424572 is about 1075.9014100093.

Adding to 1245424572 its reverse (2754245421), we get a palindrome (3999669993).

The spelling of 1245424572 in words is "one billion, two hundred forty-five million, four hundred twenty-four thousand, five hundred seventy-two".