1238751423 has 24 divisors (see below), whose sum is σ = 2202226208. Its totient is φ = 653406912.

The previous prime is 1238751403. The next prime is 1238751431. The reversal of 1238751423 is 3241578321.

It is not a de Polignac number, because 1238751423 - 2¹⁶ = 1238685887 is a prime.

It is a super-3 number, since 3×1238751423³ (a number of 28 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1238751403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 755440 + ... + 757077.

Almost surely, 2^1238751423 is an apocalyptic number.

1238751423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1238751423 is a deficient number, since it is larger than the sum of its proper divisors (963474785).

1238751423 is a wasteful number, since it uses less digits than its factorization.

1238751423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512543 (or 1512540 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 1238751423 is about 35195.9006561844. The cubic root of 1238751423 is about 1073.9763604963.

The spelling of 1238751423 in words is "one billion, two hundred thirty-eight million, seven hundred fifty-one thousand, four hundred twenty-three".