1420961880 has 128 divisors (see below), whose sum is σ = 4739051520. Its totient is φ = 338480640.

The previous prime is 1420961879. The next prime is 1420961891. The reversal of 1420961880 is 881690241.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

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, 33669 + ... + 63051.

It is an arithmetic number, because the mean of its divisors is an integer number (37023840).

Almost surely, 2^1420961880 is an apocalyptic number.

1420961880 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 1420961880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2369525760).

1420961880 is an abundant number, since it is smaller than the sum of its proper divisors (3318089640).

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

1420961880 is a wasteful number, since it uses less digits than its factorization.

1420961880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29441 (or 29437 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 1420961880 is about 37695.6480246726. The cubic root of 1420961880 is about 1124.2445970812.

The spelling of 1420961880 in words is "one billion, four hundred twenty million, nine hundred sixty-one thousand, eight hundred eighty".