126403791 has 8 divisors (see below), whose sum is σ = 175866240. Its totient is φ = 80605272.

The previous prime is 126403769. The next prime is 126403801. The reversal of 126403791 is 197304621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-126403791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126403391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 915901 + ... + 916038.

It is an arithmetic number, because the mean of its divisors is an integer number (21983280).

Almost surely, 2^126403791 is an apocalyptic number.

126403791 is a deficient number, since it is larger than the sum of its proper divisors (49462449).

126403791 is a wasteful number, since it uses less digits than its factorization.

126403791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831965.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 126403791 is about 11242.9440539389. The cubic root of 126403791 is about 501.8647580424.

The spelling of 126403791 in words is "one hundred twenty-six million, four hundred three thousand, seven hundred ninety-one".