540613642 has 4 divisors (see below), whose sum is σ = 810920466. Its totient is φ = 270306820.

The previous prime is 540613613. The next prime is 540613657. The reversal of 540613642 is 246316045.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246316045 = 5 ⋅49263209.

It can be written as a sum of positive squares in only one way, i.e., 453732601 + 86881041 = 21301^2 + 9321^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135153409 + ... + 135153412.

Almost surely, 2^540613642 is an apocalyptic number.

540613642 is a deficient number, since it is larger than the sum of its proper divisors (270306824).

540613642 is a wasteful number, since it uses less digits than its factorization.

540613642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270306823.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 540613642 is about 23251.0998019449. The cubic root of 540613642 is about 814.6336275910.

Adding to 540613642 its reverse (246316045), we get a palindrome (786929687).

The spelling of 540613642 in words is "five hundred forty million, six hundred thirteen thousand, six hundred forty-two".