1242121031232 has 224 divisors, whose sum is σ = 3369130208640. Its totient is φ = 403788595200.

The previous prime is 1242121031201. The next prime is 1242121031233. The reversal of 1242121031232 is 2321301212421.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1242121031233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 426990994 + ... + 426993902.

It is an arithmetic number, because the mean of its divisors is an integer number (15040759860).

Almost surely, 2^{1242121031232} is an apocalyptic number.

1242121031232 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 1242121031232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1684565104320).

1242121031232 is an abundant number, since it is smaller than the sum of its proper divisors (2127009177408).

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

1242121031232 is a wasteful number, since it uses less digits than its factorization.

1242121031232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349 (or 3339 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 1242121031232 its reverse (2321301212421), we get a palindrome (3563422243653).

The spelling of 1242121031232 in words is "one trillion, two hundred forty-two billion, one hundred twenty-one million, thirty-one thousand, two hundred thirty-two".