120642431450 has 12 divisors (see below), whose sum is σ = 224394922590. Its totient is φ = 48256972560.

The previous prime is 120642431449. The next prime is 120642431453. The reversal of 120642431450 is 54134246021.

It can be written as a sum of positive squares in 3 ways, for example, as 117094680481 + 3547750969 = 342191^2 + 59563^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120642431453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1206424265 + ... + 1206424364.

Almost surely, 2^120642431450 is an apocalyptic number.

120642431450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120642431450 is a deficient number, since it is larger than the sum of its proper divisors (103752491140).

120642431450 is a wasteful number, since it uses less digits than its factorization.

120642431450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412848641 (or 2412848636 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 120642431450 its reverse (54134246021), we get a palindrome (174776677471).

The spelling of 120642431450 in words is "one hundred twenty billion, six hundred forty-two million, four hundred thirty-one thousand, four hundred fifty".