1421923670 has 16 divisors (see below), whose sum is σ = 2559966768. Its totient is φ = 568657440.

The previous prime is 1421923637. The next prime is 1421923693. The reversal of 1421923670 is 763291241.

It is a self number, because there is not a number n which added to its sum of digits gives 1421923670.

It is a congruent number.

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, 55937 + ... + 77283.

It is an arithmetic number, because the mean of its divisors is an integer number (159997923).

Almost surely, 2^1421923670 is an apocalyptic number.

1421923670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1421923670 is a deficient number, since it is larger than the sum of its proper divisors (1138043098).

1421923670 is a wasteful number, since it uses less digits than its factorization.

1421923670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28015.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 1421923670 is about 37708.4031748893. The cubic root of 1421923670 is about 1124.4981913445.

The spelling of 1421923670 in words is "one billion, four hundred twenty-one million, nine hundred twenty-three thousand, six hundred seventy".