1420442240 has 64 divisors (see below), whose sum is σ = 3880863360. Its totient is φ = 487007232.

The previous prime is 1420442213. The next prime is 1420442269. The reversal of 1420442240 is 422440241.

It is a tau number, because it is divible by the number of its divisors (64).

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, 154052 + ... + 163011.

It is an arithmetic number, because the mean of its divisors is an integer number (60638490).

Almost surely, 2^1420442240 is an apocalyptic number.

1420442240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1420442240 is an abundant number, since it is smaller than the sum of its proper divisors (2460421120).

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

1420442240 is an equidigital number, since it uses as much as digits as its factorization.

1420442240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317089 (or 317077 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 1420442240 is about 37688.7548215645. The cubic root of 1420442240 is about 1124.1075364749.

Adding to 1420442240 its reverse (422440241), we get a palindrome (1842882481).

The spelling of 1420442240 in words is "one billion, four hundred twenty million, four hundred forty-two thousand, two hundred forty".