1239133430 has 16 divisors (see below), whose sum is σ = 2231127504. Its totient is φ = 495500640.

The previous prime is 1239133411. The next prime is 1239133439. The reversal of 1239133430 is 343319321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1239133393 and 1239133402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1239133439) 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 7 ways as a sum of consecutive naturals, for example, 18509 + ... + 53111.

It is an arithmetic number, because the mean of its divisors is an integer number (139445469).

Almost surely, 2^1239133430 is an apocalyptic number.

1239133430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1239133430 is a deficient number, since it is larger than the sum of its proper divisors (991994074).

1239133430 is a wasteful number, since it uses less digits than its factorization.

1239133430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38191.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 1239133430 is about 35201.3271056646. The cubic root of 1239133430 is about 1074.0867470017.

It can be divided in two parts, 123913 and 3430, that multiplied together give a triangular number (425021590 = T₂₉₁₅₅).

The spelling of 1239133430 in words is "one billion, two hundred thirty-nine million, one hundred thirty-three thousand, four hundred thirty".