1420405831 has 8 divisors (see below), whose sum is σ = 1530340560. Its totient is φ = 1310567232.

The previous prime is 1420405817. The next prime is 1420405837. The reversal of 1420405831 is 1385040241.

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

It is not a de Polignac number, because 1420405831 - 2¹¹ = 1420403783 is a prime.

It is a super-2 number, since 2×1420405831² = 4035105449477601122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1420405831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420405837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8280 + ... + 53938.

It is an arithmetic number, because the mean of its divisors is an integer number (191292570).

Almost surely, 2^1420405831 is an apocalyptic number.

1420405831 is a deficient number, since it is larger than the sum of its proper divisors (109934729).

1420405831 is a wasteful number, since it uses less digits than its factorization.

1420405831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48065.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1420405831 is about 37688.2717964090. The cubic root of 1420405831 is about 1124.0979319588.

The spelling of 1420405831 in words is "one billion, four hundred twenty million, four hundred five thousand, eight hundred thirty-one".