126999087 has 4 divisors (see below), whose sum is σ = 169332120. Its totient is φ = 84666056.

The previous prime is 126999083. The next prime is 126999101. The reversal of 126999087 is 780999621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126999087 - 2² = 126999083 is a prime.

It is a super-2 number, since 2×126999087² = 32257536197667138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126999083) 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, 21166512 + ... + 21166517.

It is an arithmetic number, because the mean of its divisors is an integer number (42333030).

Almost surely, 2^126999087 is an apocalyptic number.

126999087 is a deficient number, since it is larger than the sum of its proper divisors (42333033).

126999087 is an equidigital number, since it uses as much as digits as its factorization.

126999087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42333032.

The product of its (nonzero) digits is 489888, while the sum is 51.

The square root of 126999087 is about 11269.3871616872. The cubic root of 126999087 is about 502.6513650093.

The spelling of 126999087 in words is "one hundred twenty-six million, nine hundred ninety-nine thousand, eighty-seven".