1407521442 has 64 divisors (see below), whose sum is σ = 2920955904. Its totient is φ = 451967040.

The previous prime is 1407521417. The next prime is 1407521447. The reversal of 1407521442 is 2441257041.

It is a super-2 number, since 2×1407521442² = 3962233219379518728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1407521447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4973433 + ... + 4973715.

It is an arithmetic number, because the mean of its divisors is an integer number (45639936).

Almost surely, 2^1407521442 is an apocalyptic number.

1407521442 is an abundant number, since it is smaller than the sum of its proper divisors (1513434462).

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

1407521442 is a wasteful number, since it uses less digits than its factorization.

1407521442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583.

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 1407521442 is about 37516.9487298741. The cubic root of 1407521442 is about 1120.6887350758.

Adding to 1407521442 its reverse (2441257041), we get a palindrome (3848778483).

The spelling of 1407521442 in words is "one billion, four hundred seven million, five hundred twenty-one thousand, four hundred forty-two".