126030919 has 4 divisors (see below), whose sum is σ = 144035344. Its totient is φ = 108026496.

The previous prime is 126030907. The next prime is 126030929. The reversal of 126030919 is 919030621.

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 126030919 - 2¹⁵ = 125998151 is a prime.

It is a super-2 number, since 2×126030919² = 31767585087969122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126030929) 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, 9002202 + ... + 9002215.

It is an arithmetic number, because the mean of its divisors is an integer number (36008836).

Almost surely, 2^126030919 is an apocalyptic number.

126030919 is a deficient number, since it is larger than the sum of its proper divisors (18004425).

126030919 is an equidigital number, since it uses as much as digits as its factorization.

126030919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18004424.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 126030919 is about 11226.3493175654. The cubic root of 126030919 is about 501.3707970630.

The spelling of 126030919 in words is "one hundred twenty-six million, thirty thousand, nine hundred nineteen".