1420132640 has 24 divisors (see below), whose sum is σ = 3355063740. Its totient is φ = 568052992.

The previous prime is 1420132633. The next prime is 1420132691. The reversal of 1420132640 is 462310241.

It can be written as a sum of positive squares in 2 ways, for example, as 1402053136 + 18079504 = 37444^2 + 4252^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4437755 + ... + 4438074.

Almost surely, 2^1420132640 is an apocalyptic number.

1420132640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1420132640 is an abundant number, since it is smaller than the sum of its proper divisors (1934931100).

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

1420132640 is an equidigital number, since it uses as much as digits as its factorization.

1420132640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8875844 (or 8875836 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1420132640 is about 37684.6472718002. The cubic root of 1420132640 is about 1124.0258602730.

Adding to 1420132640 its reverse (462310241), we get a palindrome (1882442881).

The spelling of 1420132640 in words is "one billion, four hundred twenty million, one hundred thirty-two thousand, six hundred forty".