126142730 has 16 divisors (see below), whose sum is σ = 259493760. Its totient is φ = 43248912.

The previous prime is 126142711. The next prime is 126142733. The reversal of 126142730 is 37241621.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 126142730.

It is not an unprimeable number, because it can be changed into a prime (126142733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 900950 + ... + 901089.

It is an arithmetic number, because the mean of its divisors is an integer number (16218360).

Almost surely, 2^126142730 is an apocalyptic number.

126142730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126142730 is an abundant number, since it is smaller than the sum of its proper divisors (133351030).

126142730 is a wasteful number, since it uses less digits than its factorization.

126142730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1802053.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 126142730 is about 11231.3280603854. The cubic root of 126142730 is about 501.5190204802.

The spelling of 126142730 in words is "one hundred twenty-six million, one hundred forty-two thousand, seven hundred thirty".