1421522452 has 36 divisors (see below), whose sum is σ = 2972060896. Its totient is φ = 582729840.

The previous prime is 1421522413. The next prime is 1421522461. The reversal of 1421522452 is 2542251241.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 1421522452.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33174 + ... + 62797.

Almost surely, 2^1421522452 is an apocalyptic number.

It is an amenable number.

1421522452 is an abundant number, since it is smaller than the sum of its proper divisors (1550538444).

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

1421522452 is a wasteful number, since it uses less digits than its factorization.

1421522452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96028 (or 96003 counting only the distinct ones).

The product of its digits is 6400, while the sum is 28.

The square root of 1421522452 is about 37703.0827917294. The cubic root of 1421522452 is about 1124.3924164785.

Adding to 1421522452 its reverse (2542251241), we get a palindrome (3963773693).

The spelling of 1421522452 in words is "one billion, four hundred twenty-one million, five hundred twenty-two thousand, four hundred fifty-two".