1242020023039 has 4 divisors (see below), whose sum is σ = 1268445981024. Its totient is φ = 1215594065056.

The previous prime is 1242020023033. The next prime is 1242020023073. The reversal of 1242020023039 is 9303200202421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1242020023039 - 2¹³ = 1242020014847 is a prime.

It is a super-2 number, since 2×1242020023039² (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 = 1242020022998 and 1242020023016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242020023033) 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, 13212978922 + ... + 13212979015.

It is an arithmetic number, because the mean of its divisors is an integer number (317111495256).

Almost surely, 2^{1242020023039} is an apocalyptic number.

1242020023039 is a deficient number, since it is larger than the sum of its proper divisors (26425957985).

1242020023039 is an equidigital number, since it uses as much as digits as its factorization.

1242020023039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26425957984.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 1242020023039 in words is "one trillion, two hundred forty-two billion, twenty million, twenty-three thousand, thirty-nine".