1298442132 has 72 divisors (see below), whose sum is σ = 3561798240. Its totient is φ = 396452160.

The previous prime is 1298442113. The next prime is 1298442139. The reversal of 1298442132 is 2312448921.

1298442132 is a `hidden beast` number, since 129 + 84 + 421 + 32 = 666.

It is a super-3 number, since 3×1298442132³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298442139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50719 + ... + 71897.

It is an arithmetic number, because the mean of its divisors is an integer number (49469420).

Almost surely, 2^1298442132 is an apocalyptic number.

1298442132 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 1298442132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1780899120).

1298442132 is an abundant number, since it is smaller than the sum of its proper divisors (2263356108).

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

1298442132 is a wasteful number, since it uses less digits than its factorization.

1298442132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21333 (or 21328 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 1298442132 is about 36033.9025363615. The cubic root of 1298442132 is about 1090.9567482741.

The spelling of 1298442132 in words is "one billion, two hundred ninety-eight million, four hundred forty-two thousand, one hundred thirty-two".