126400029 has 16 divisors (see below), whose sum is σ = 197816448. Its totient is φ = 70276032.

The previous prime is 126400013. The next prime is 126400031. The reversal of 126400029 is 920004621.

It is not a de Polignac number, because 126400029 - 2⁴ = 126400013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126399981 and 126400008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126400039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80562 + ... + 82115.

It is an arithmetic number, because the mean of its divisors is an integer number (12363528).

Almost surely, 2^126400029 is an apocalyptic number.

It is an amenable number.

126400029 is a deficient number, since it is larger than the sum of its proper divisors (71416419).

126400029 is a wasteful number, since it uses less digits than its factorization.

126400029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162724.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 126400029 is about 11242.7767477612. The cubic root of 126400029 is about 501.8597791992.

The spelling of 126400029 in words is "one hundred twenty-six million, four hundred thousand, twenty-nine".