126540382 has 4 divisors (see below), whose sum is σ = 189810576. Its totient is φ = 63270190.

The previous prime is 126540371. The next prime is 126540397. The reversal of 126540382 is 283045621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 283045621 = 7187 ⋅39383.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31635094 + ... + 31635097.

It is an arithmetic number, because the mean of its divisors is an integer number (47452644).

Almost surely, 2^126540382 is an apocalyptic number.

126540382 is a deficient number, since it is larger than the sum of its proper divisors (63270194).

126540382 is an equidigital number, since it uses as much as digits as its factorization.

126540382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63270193.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 126540382 is about 11249.0169348259. The cubic root of 126540382 is about 502.0454634148.

The spelling of 126540382 in words is "one hundred twenty-six million, five hundred forty thousand, three hundred eighty-two".