1242473526 has 128 divisors (see below), whose sum is σ = 3359232000. Its totient is φ = 332301312.

The previous prime is 1242473503. The next prime is 1242473537. The reversal of 1242473526 is 6253742421.

1242473526 is a `hidden beast` number, since 124 + 2 + 4 + 7 + 3 + 526 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1535410 + ... + 1536218.

It is an arithmetic number, because the mean of its divisors is an integer number (26244000).

Almost surely, 2^1242473526 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242473526, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1679616000).

1242473526 is an abundant number, since it is smaller than the sum of its proper divisors (2116758474).

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

1242473526 is a wasteful number, since it uses less digits than its factorization.

1242473526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083 (or 1077 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 1242473526 is about 35248.7379348538. The cubic root of 1242473526 is about 1075.0509515421.

The spelling of 1242473526 in words is "one billion, two hundred forty-two million, four hundred seventy-three thousand, five hundred twenty-six".