540402126 has 64 divisors (see below), whose sum is σ = 1200925440. Its totient is φ = 160751360.

The previous prime is 540402097. The next prime is 540402133. The reversal of 540402126 is 621204045.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 540402096 and 540402105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1156945 + ... + 1157411.

It is an arithmetic number, because the mean of its divisors is an integer number (18764460).

Almost surely, 2^540402126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 540402126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (600462720).

540402126 is an abundant number, since it is smaller than the sum of its proper divisors (660523314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

540402126 is a wasteful number, since it uses less digits than its factorization.

540402126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 540402126 is about 23246.5508409312. The cubic root of 540402126 is about 814.5273714715.

The spelling of 540402126 in words is "five hundred forty million, four hundred two thousand, one hundred twenty-six".