1421870265 has 24 divisors (see below), whose sum is σ = 2471040000. Its totient is φ = 756341664.

The previous prime is 1421870257. The next prime is 1421870267. The reversal of 1421870265 is 5620781241.

It is not a de Polignac number, because 1421870265 - 2³ = 1421870257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1421870267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24015 + ... + 58484.

It is an arithmetic number, because the mean of its divisors is an integer number (102960000).

Almost surely, 2^1421870265 is an apocalyptic number.

1421870265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1421870265 is a deficient number, since it is larger than the sum of its proper divisors (1049169735).

1421870265 is a wasteful number, since it uses less digits than its factorization.

1421870265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82893 (or 82890 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 1421870265 is about 37707.6950369550. The cubic root of 1421870265 is about 1124.4841130975.

The spelling of 1421870265 in words is "one billion, four hundred twenty-one million, eight hundred seventy thousand, two hundred sixty-five".