540213442 has 4 divisors (see below), whose sum is σ = 810320166. Its totient is φ = 270106720.

The previous prime is 540213439. The next prime is 540213451. The reversal of 540213442 is 244312045.

It is a happy number.

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., 429774361 + 110439081 = 20731^2 + 10509^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135053359 + ... + 135053362.

Almost surely, 2^540213442 is an apocalyptic number.

540213442 is a deficient number, since it is larger than the sum of its proper divisors (270106724).

540213442 is a wasteful number, since it uses less digits than its factorization.

540213442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270106723.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 540213442 is about 23242.4921641376. The cubic root of 540213442 is about 814.4325617205.

Adding to 540213442 its reverse (244312045), we get a palindrome (784525487).

The spelling of 540213442 in words is "five hundred forty million, two hundred thirteen thousand, four hundred forty-two".