1421541870 has 192 divisors, whose sum is σ = 4222748160. Its totient is φ = 299870208.

The previous prime is 1421541857. The next prime is 1421541889. The reversal of 1421541870 is 781451241.

1421541870 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3580512 + ... + 3580908.

It is an arithmetic number, because the mean of its divisors is an integer number (21993480).

Almost surely, 2^1421541870 is an apocalyptic number.

1421541870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421541870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2111374080).

1421541870 is an abundant number, since it is smaller than the sum of its proper divisors (2801206290).

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

1421541870 is a wasteful number, since it uses less digits than its factorization.

1421541870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 1421541870 is about 37703.3403029493. The cubic root of 1421541870 is about 1124.3975361896.

The spelling of 1421541870 in words is "one billion, four hundred twenty-one million, five hundred forty-one thousand, eight hundred seventy".