53407242 has 64 divisors (see below), whose sum is σ = 141557760. Its totient is φ = 14593392.

The previous prime is 53407223. The next prime is 53407253. The reversal of 53407242 is 24270435.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5623 + ... + 11765.

It is an arithmetic number, because the mean of its divisors is an integer number (2211840).

Almost surely, 2^53407242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53407242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70778880).

53407242 is an abundant number, since it is smaller than the sum of its proper divisors (88150518).

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

53407242 is a wasteful number, since it uses less digits than its factorization.

53407242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6184 (or 6178 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 53407242 is about 7308.0258620232. The cubic root of 53407242 is about 376.5882080909.

Adding to 53407242 its reverse (24270435), we get a palindrome (77677677).

The spelling of 53407242 in words is "fifty-three million, four hundred seven thousand, two hundred forty-two".