1421865700 has 72 divisors (see below), whose sum is σ = 3142993280. Its totient is φ = 558230400.

The previous prime is 1421865689. The next prime is 1421865713. The reversal of 1421865700 is 75681241.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1666474 + ... + 1667326.

Almost surely, 2^1421865700 is an apocalyptic number.

1421865700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421865700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1571496640).

1421865700 is an abundant number, since it is smaller than the sum of its proper divisors (1721127580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421865700 is a wasteful number, since it uses less digits than its factorization.

1421865700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157 (or 1150 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 1421865700 is about 37707.6345054950. The cubic root of 1421865700 is about 1124.4829096883.

The spelling of 1421865700 in words is "one billion, four hundred twenty-one million, eight hundred sixty-five thousand, seven hundred".