1261468572 has 96 divisors (see below), whose sum is σ = 3636455424. Its totient is φ = 331430400.

The previous prime is 1261468567. The next prime is 1261468583. The reversal of 1261468572 is 2758641621.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 304797 + ... + 308907.

It is an arithmetic number, because the mean of its divisors is an integer number (37879744).

Almost surely, 2^1261468572 is an apocalyptic number.

1261468572 is a gapful number since it is divisible by the number (12) 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 1261468572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1818227712).

1261468572 is an abundant number, since it is smaller than the sum of its proper divisors (2374986852).

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

1261468572 is a wasteful number, since it uses less digits than its factorization.

1261468572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4419 (or 4417 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 1261468572 is about 35517.1588390738. The cubic root of 1261468572 is about 1080.5017593060.

The spelling of 1261468572 in words is "one billion, two hundred sixty-one million, four hundred sixty-eight thousand, five hundred seventy-two".