1420400653 has 8 divisors (see below), whose sum is σ = 1646179200. Its totient is φ = 1200338160.

The previous prime is 1420400647. The next prime is 1420400699. The reversal of 1420400653 is 3560040241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1420400653 - 2¹³ = 1420392461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420400623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1428478 + ... + 1429471.

It is an arithmetic number, because the mean of its divisors is an integer number (205772400).

Almost surely, 2^1420400653 is an apocalyptic number.

It is an amenable number.

1420400653 is a deficient number, since it is larger than the sum of its proper divisors (225778547).

1420400653 is an equidigital number, since it uses as much as digits as its factorization.

1420400653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2858027.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1420400653 is about 37688.2031012358. The cubic root of 1420400653 is about 1124.0965660145.

Adding to 1420400653 its reverse (3560040241), we get a palindrome (4980440894).

The spelling of 1420400653 in words is "one billion, four hundred twenty million, four hundred thousand, six hundred fifty-three".