1420115440 has 40 divisors (see below), whose sum is σ = 3310689888. Its totient is φ = 566511360.

The previous prime is 1420115407. The next prime is 1420115453. The reversal of 1420115440 is 445110241.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6045 + ... + 53635.

Almost surely, 2^1420115440 is an apocalyptic number.

1420115440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1420115440 is an abundant number, since it is smaller than the sum of its proper divisors (1890574448).

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

1420115440 is a wasteful number, since it uses less digits than its factorization.

1420115440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47977 (or 47971 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1420115440 is about 37684.4190614636. The cubic root of 1420115440 is about 1124.0213223582.

Adding to 1420115440 its reverse (445110241), we get a palindrome (1865225681).

The spelling of 1420115440 in words is "one billion, four hundred twenty million, one hundred fifteen thousand, four hundred forty".