1420642905 has 32 divisors (see below), whose sum is σ = 2514613248. Its totient is φ = 679089600.

The previous prime is 1420642877. The next prime is 1420642913. The reversal of 1420642905 is 5092460241.

It is not a de Polignac number, because 1420642905 - 2⁶ = 1420642841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48919 + ... + 72348.

It is an arithmetic number, because the mean of its divisors is an integer number (78581664).

Almost surely, 2^1420642905 is an apocalyptic number.

1420642905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1420642905 is a deficient number, since it is larger than the sum of its proper divisors (1093970343).

1420642905 is a wasteful number, since it uses less digits than its factorization.

1420642905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121357.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 1420642905 is about 37691.4168611370. The cubic root of 1420642905 is about 1124.1604679755.

The spelling of 1420642905 in words is "one billion, four hundred twenty million, six hundred forty-two thousand, nine hundred five".