1242795616 has 48 divisors (see below), whose sum is σ = 2558304000. Its totient is φ = 593177728.

The previous prime is 1242795601. The next prime is 1242795629. The reversal of 1242795616 is 6165972421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439455 + ... + 442273.

It is an arithmetic number, because the mean of its divisors is an integer number (53298000).

Almost surely, 2^1242795616 is an apocalyptic number.

1242795616 is a gapful number since it is divisible by the number (16) 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 1242795616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1279152000).

1242795616 is an abundant number, since it is smaller than the sum of its proper divisors (1315508384).

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

1242795616 is a wasteful number, since it uses less digits than its factorization.

1242795616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3451 (or 3443 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 1242795616 is about 35253.3064548561. The cubic root of 1242795616 is about 1075.1438397035.

The spelling of 1242795616 in words is "one billion, two hundred forty-two million, seven hundred ninety-five thousand, six hundred sixteen".