42135554 has 8 divisors (see below), whose sum is σ = 66921228. Its totient is φ = 19828480.

The previous prime is 42135551. The next prime is 42135581. The reversal of 42135554 is 45553124.

It can be written as a sum of positive squares in 2 ways, for example, as 41538025 + 597529 = 6445^2 + 773^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (42135551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619607 + ... + 619674.

Almost surely, 2^42135554 is an apocalyptic number.

42135554 is a deficient number, since it is larger than the sum of its proper divisors (24785674).

42135554 is a wasteful number, since it uses less digits than its factorization.

42135554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239300.

The product of its digits is 12000, while the sum is 29.

The square root of 42135554 is about 6491.1904917357. The cubic root of 42135554 is about 347.9762226675.

Adding to 42135554 its reverse (45553124), we get a palindrome (87688678).

The spelling of 42135554 in words is "forty-two million, one hundred thirty-five thousand, five hundred fifty-four".