1242759132 has 24 divisors (see below), whose sum is σ = 3221968400. Its totient is φ = 414253008.

The previous prime is 1242759121. The next prime is 1242759137. The reversal of 1242759132 is 2319572421.

1242759132 is a `hidden beast` number, since 12 + 4 + 27 + 591 + 32 = 666.

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 (1242759137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5753407 + ... + 5753622.

Almost surely, 2^1242759132 is an apocalyptic number.

1242759132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1242759132 is an abundant number, since it is smaller than the sum of its proper divisors (1979209268).

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

1242759132 is a wasteful number, since it uses less digits than its factorization.

1242759132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11507042 (or 11507034 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 1242759132 is about 35252.7889960497. The cubic root of 1242759132 is about 1075.1333188179.

The spelling of 1242759132 in words is "one billion, two hundred forty-two million, seven hundred fifty-nine thousand, one hundred thirty-two".