42400554 has 16 divisors (see below), whose sum is σ = 96915648. Its totient is φ = 12114432.

The previous prime is 42400549. The next prime is 42400573. The reversal of 42400554 is 45500424.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504727 + ... + 504810.

It is an arithmetic number, because the mean of its divisors is an integer number (6057228).

Almost surely, 2^42400554 is an apocalyptic number.

42400554 is an abundant number, since it is smaller than the sum of its proper divisors (54515094).

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

42400554 is a wasteful number, since it uses less digits than its factorization.

42400554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009549.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 42400554 is about 6511.5707782378. The cubic root of 42400554 is about 348.7041989672.

Adding to 42400554 its reverse (45500424), we get a palindrome (87900978).

The spelling of 42400554 in words is "forty-two million, four hundred thousand, five hundred fifty-four".