1251421140332 has 48 divisors (see below), whose sum is σ = 2411792869248. Its totient is φ = 563420901120.

The previous prime is 1251421140329. The next prime is 1251421140341. The reversal of 1251421140332 is 2330411241521.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1251421140295 and 1251421140304.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35466563 + ... + 35501829.

It is an arithmetic number, because the mean of its divisors is an integer number (50245684776).

Almost surely, 2^{1251421140332} is an apocalyptic number.

It is an amenable number.

1251421140332 is a deficient number, since it is larger than the sum of its proper divisors (1160371728916).

1251421140332 is a wasteful number, since it uses less digits than its factorization.

1251421140332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42926 (or 42924 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 1251421140332 its reverse (2330411241521), we get a palindrome (3581832381853).

The spelling of 1251421140332 in words is "one trillion, two hundred fifty-one billion, four hundred twenty-one million, one hundred forty thousand, three hundred thirty-two".