1243552023 has 24 divisors (see below), whose sum is σ = 2173605408. Its totient is φ = 668800512.

The previous prime is 1243552019. The next prime is 1243552049. The reversal of 1243552023 is 3202553421.

It is a happy number.

It is not a de Polignac number, because 1243552023 - 2² = 1243552019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243550023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 579486 + ... + 581627.

It is an arithmetic number, because the mean of its divisors is an integer number (90566892).

Almost surely, 2^1243552023 is an apocalyptic number.

1243552023 is a deficient number, since it is larger than the sum of its proper divisors (930053385).

1243552023 is a wasteful number, since it uses less digits than its factorization.

1243552023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161143 (or 1161140 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1243552023 is about 35264.0329939728. The cubic root of 1243552023 is about 1075.3619183058.

The spelling of 1243552023 in words is "one billion, two hundred forty-three million, five hundred fifty-two thousand, twenty-three".