540026402 has 4 divisors (see below), whose sum is σ = 810039606. Its totient is φ = 270013200.

The previous prime is 540026401. The next prime is 540026411. The reversal of 540026402 is 204620045.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 484836361 + 55190041 = 22019^2 + 7429^2 .

It is not an unprimeable number, because it can be changed into a prime (540026401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135006599 + ... + 135006602.

Almost surely, 2^540026402 is an apocalyptic number.

540026402 is a deficient number, since it is larger than the sum of its proper divisors (270013204).

540026402 is a wasteful number, since it uses less digits than its factorization.

540026402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270013203.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 540026402 is about 23238.4681508915. The cubic root of 540026402 is about 814.3385562537.

Adding to 540026402 its reverse (204620045), we get a palindrome (744646447).

The spelling of 540026402 in words is "five hundred forty million, twenty-six thousand, four hundred two".