1261014420 has 96 divisors (see below), whose sum is σ = 3724761600. Its totient is φ = 317879424.

The previous prime is 1261014413. The next prime is 1261014449. The reversal of 1261014420 is 244101621.

It is a happy number.

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, 704767 + ... + 706553.

It is an arithmetic number, because the mean of its divisors is an integer number (38799600).

Almost surely, 2^1261014420 is an apocalyptic number.

1261014420 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 1261014420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1862380800).

1261014420 is an abundant number, since it is smaller than the sum of its proper divisors (2463747180).

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

1261014420 is a wasteful number, since it uses less digits than its factorization.

1261014420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2437 (or 2435 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1261014420 is about 35510.7648467334. The cubic root of 1261014420 is about 1080.3720768744.

The spelling of 1261014420 in words is "one billion, two hundred sixty-one million, fourteen thousand, four hundred twenty".