1242642632 has 64 divisors (see below), whose sum is σ = 2983443840. Its totient is φ = 471052800.

The previous prime is 1242642631. The next prime is 1242642641. The reversal of 1242642632 is 2362462421.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1242642631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4469 + ... + 50052.

It is an arithmetic number, because the mean of its divisors is an integer number (46616310).

Almost surely, 2^1242642632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242642632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1491721920).

1242642632 is an abundant number, since it is smaller than the sum of its proper divisors (1740801208).

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

1242642632 is a wasteful number, since it uses less digits than its factorization.

1242642632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54582 (or 54578 counting only the distinct ones).

The product of its digits is 27648, while the sum is 32.

The square root of 1242642632 is about 35251.1366057890. The cubic root of 1242642632 is about 1075.0997223516.

The spelling of 1242642632 in words is "one billion, two hundred forty-two million, six hundred forty-two thousand, six hundred thirty-two".