1142521450 has 48 divisors (see below), whose sum is σ = 2432880000. Its totient is φ = 391043520.

The previous prime is 1142521447. The next prime is 1142521469. The reversal of 1142521450 is 541252411.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 226051 + ... + 231049.

It is an arithmetic number, because the mean of its divisors is an integer number (50685000).

Almost surely, 2^1142521450 is an apocalyptic number.

1142521450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1142521450 is an abundant number, since it is smaller than the sum of its proper divisors (1290358550).

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

1142521450 is a wasteful number, since it uses less digits than its factorization.

1142521450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5671 (or 5666 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 1142521450 is about 33801.2048601821. The cubic root of 1142521450 is about 1045.4135402259.

Adding to 1142521450 its reverse (541252411), we get a palindrome (1683773861).

The spelling of 1142521450 in words is "one billion, one hundred forty-two million, five hundred twenty-one thousand, four hundred fifty".