126505419 has 16 divisors (see below), whose sum is σ = 170465568. Its totient is φ = 83446272.

The previous prime is 126505411. The next prime is 126505469. The reversal of 126505419 is 914505621.

It is not a de Polignac number, because 126505419 - 2³ = 126505411 is a prime.

It is a super-2 number, since 2×126505419² = 32007242072731122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 126505419.

It is not an unprimeable number, because it can be changed into a prime (126505411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158329 + ... + 159125.

It is an arithmetic number, because the mean of its divisors is an integer number (10654098).

Almost surely, 2^126505419 is an apocalyptic number.

126505419 is a deficient number, since it is larger than the sum of its proper divisors (43960149).

126505419 is a wasteful number, since it uses less digits than its factorization.

126505419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 126505419 is about 11247.4627805563. The cubic root of 126505419 is about 501.9992209106. Note that the first 3 decimals are identical.

The spelling of 126505419 in words is "one hundred twenty-six million, five hundred five thousand, four hundred nineteen".