1251423240132 has 96 divisors (see below), whose sum is σ = 3262076858880. Its totient is φ = 370906398720.

The previous prime is 1251423240131. The next prime is 1251423240143. The reversal of 1251423240132 is 2310423241521.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1251423240132.

It is not an unprimeable number, because it can be changed into a prime (1251423240131) 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, 733053 + ... + 1743620.

It is an arithmetic number, because the mean of its divisors is an integer number (33979967280).

Almost surely, 2^{1251423240132} is an apocalyptic number.

1251423240132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1251423240132 is an abundant number, since it is smaller than the sum of its proper divisors (2010653618748).

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

1251423240132 is a wasteful number, since it uses less digits than its factorization.

1251423240132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2476813 (or 2476811 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 1251423240132 its reverse (2310423241521), we get a palindrome (3561846481653).

The spelling of 1251423240132 in words is "one trillion, two hundred fifty-one billion, four hundred twenty-three million, two hundred forty thousand, one hundred thirty-two".