1251423105041 has 4 divisors (see below), whose sum is σ = 1251426120000. Its totient is φ = 1251420090084.

The previous prime is 1251423105011. The next prime is 1251423105061. The reversal of 1251423105041 is 1405013241521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1251423105041 - 2³⁰ = 1250349363217 is a prime.

It is a super-2 number, since 2×1251423105041² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1251423104995 and 1251423105013.

It is not an unprimeable number, because it can be changed into a prime (1251423105011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 761981 + ... + 1755978.

It is an arithmetic number, because the mean of its divisors is an integer number (312856530000).

Almost surely, 2^{1251423105041} is an apocalyptic number.

It is an amenable number.

1251423105041 is a deficient number, since it is larger than the sum of its proper divisors (3014959).

1251423105041 is an equidigital number, since it uses as much as digits as its factorization.

1251423105041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3014958.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 1251423105041 its reverse (1405013241521), we get a palindrome (2656436346562).

The spelling of 1251423105041 in words is "one trillion, two hundred fifty-one billion, four hundred twenty-three million, one hundred five thousand, forty-one".