1245402020423 has 16 divisors (see below), whose sum is σ = 1375997544960. Its totient is φ = 1117706428800.

The previous prime is 1245402020407. The next prime is 1245402020431. The reversal of 1245402020423 is 3240202045421.

It is a cyclic number.

It is not a de Polignac number, because 1245402020423 - 2⁴ = 1245402020407 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 (1245402020483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6872111 + ... + 7051007.

It is an arithmetic number, because the mean of its divisors is an integer number (85999846560).

Almost surely, 2^{1245402020423} is an apocalyptic number.

1245402020423 is a deficient number, since it is larger than the sum of its proper divisors (130595524537).

1245402020423 is a wasteful number, since it uses less digits than its factorization.

1245402020423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186998.

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 1245402020423 its reverse (3240202045421), we get a palindrome (4485604065844).

The spelling of 1245402020423 in words is "one trillion, two hundred forty-five billion, four hundred two million, twenty thousand, four hundred twenty-three".