1245424114021 has 8 divisors (see below), whose sum is σ = 1250896993400. Its totient is φ = 1239951533760.

The previous prime is 1245424113979. The next prime is 1245424114043. The reversal of 1245424114021 is 1204114245421.

It can be written as a sum of positive squares in 4 ways, for example, as 68819652225 + 1176604461796 = 262335^2 + 1084714^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1245424114021 - 2⁹ = 1245424113509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245424114321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14381311 + ... + 14467651.

It is an arithmetic number, because the mean of its divisors is an integer number (156362124175).

Almost surely, 2^{1245424114021} is an apocalyptic number.

It is an amenable number.

1245424114021 is a deficient number, since it is larger than the sum of its proper divisors (5472879379).

1245424114021 is an equidigital number, since it uses as much as digits as its factorization.

1245424114021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149559.

The product of its (nonzero) digits is 10240, while the sum is 31.

Adding to 1245424114021 its reverse (1204114245421), we get a palindrome (2449538359442).

The spelling of 1245424114021 in words is "one trillion, two hundred forty-five billion, four hundred twenty-four million, one hundred fourteen thousand, twenty-one".