126893905 has 16 divisors (see below), whose sum is σ = 156988944. Its totient is φ = 98392320.

The previous prime is 126893891. The next prime is 126893911. The reversal of 126893905 is 509398621.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 30206016 + 96687889 = 5496^2 + 9833^2 .

It is not a de Polignac number, because 126893905 - 2¹³ = 126885713 is a prime.

It is a super-2 number, since 2×126893905² = 32204126252298050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a Zeisel number, with parameters (8, -3).

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53035 + ... + 55375.

It is an arithmetic number, because the mean of its divisors is an integer number (9811809).

Almost surely, 2^126893905 is an apocalyptic number.

It is an amenable number.

126893905 is a deficient number, since it is larger than the sum of its proper divisors (30095039).

126893905 is a wasteful number, since it uses less digits than its factorization.

126893905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 126893905 is about 11264.7194816382. The cubic root of 126893905 is about 502.5125596062.

The spelling of 126893905 in words is "one hundred twenty-six million, eight hundred ninety-three thousand, nine hundred five".