126331429 has 4 divisors (see below), whose sum is σ = 144378784. Its totient is φ = 108284076.

The previous prime is 126331423. The next prime is 126331451. The reversal of 126331429 is 924133621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 924133621 = 20747 ⋅44543.

It is a cyclic number.

It is not a de Polignac number, because 126331429 - 2¹⁷ = 126200357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126331429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126331423) 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, 9023667 + ... + 9023680.

It is an arithmetic number, because the mean of its divisors is an integer number (36094696).

Almost surely, 2^126331429 is an apocalyptic number.

It is an amenable number.

126331429 is a deficient number, since it is larger than the sum of its proper divisors (18047355).

126331429 is an equidigital number, since it uses as much as digits as its factorization.

126331429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18047354.

The product of its digits is 7776, while the sum is 31.

The square root of 126331429 is about 11239.7254859716. The cubic root of 126331429 is about 501.7689727567.

The spelling of 126331429 in words is "one hundred twenty-six million, three hundred thirty-one thousand, four hundred twenty-nine".