1421252524 has 24 divisors (see below), whose sum is σ = 2598247008. Its totient is φ = 678965760.

The previous prime is 1421252491. The next prime is 1421252531. The reversal of 1421252524 is 4252521241.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1421252492 and 1421252501.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78364 + ... + 94780.

It is an arithmetic number, because the mean of its divisors is an integer number (108260292).

Almost surely, 2^1421252524 is an apocalyptic number.

It is an amenable number.

1421252524 is a deficient number, since it is larger than the sum of its proper divisors (1176994484).

1421252524 is a wasteful number, since it uses less digits than its factorization.

1421252524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17385 (or 17383 counting only the distinct ones).

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

The square root of 1421252524 is about 37699.5029675459. The cubic root of 1421252524 is about 1124.3212429729.

Adding to 1421252524 its reverse (4252521241), we get a palindrome (5673773765).

The spelling of 1421252524 in words is "one billion, four hundred twenty-one million, two hundred fifty-two thousand, five hundred twenty-four".