1407521412 has 72 divisors (see below), whose sum is σ = 3889529280. Its totient is φ = 425622720.

The previous prime is 1407521411. The next prime is 1407521417. The reversal of 1407521412 is 2141257041.

It is a super-2 number, since 2×1407521412² = 3962233050476947488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1407521411) 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 23 ways as a sum of consecutive naturals, for example, 198073 + ... + 205055.

It is an arithmetic number, because the mean of its divisors is an integer number (54021240).

Almost surely, 2^1407521412 is an apocalyptic number.

1407521412 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 1407521412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1944764640).

1407521412 is an abundant number, since it is smaller than the sum of its proper divisors (2482007868).

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

1407521412 is a wasteful number, since it uses less digits than its factorization.

1407521412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7513 (or 7508 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 1407521412 is about 37516.9483300548. The cubic root of 1407521412 is about 1120.6887271136.

Adding to 1407521412 its reverse (2141257041), we get a palindrome (3548778453).

The spelling of 1407521412 in words is "one billion, four hundred seven million, five hundred twenty-one thousand, four hundred twelve".