42451152 has 80 divisors (see below), whose sum is σ = 115802112. Its totient is φ = 13380480.

The previous prime is 42451151. The next prime is 42451153. The reversal of 42451152 is 25115424.

It is an interprime number because it is at equal distance from previous prime (42451151) and next prime (42451153).

It is a super-2 number, since 2×42451152² = 3604200612254208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42451151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69633 + ... + 70239.

Almost surely, 2^42451152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42451152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57901056).

42451152 is an abundant number, since it is smaller than the sum of its proper divisors (73350960).

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

42451152 is a wasteful number, since it uses less digits than its factorization.

42451152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696 (or 690 counting only the distinct ones).

The product of its digits is 1600, while the sum is 24.

The square root of 42451152 is about 6515.4548574908. The cubic root of 42451152 is about 348.8428506259.

Adding to 42451152 its reverse (25115424), we get a palindrome (67566576).

The spelling of 42451152 in words is "forty-two million, four hundred fifty-one thousand, one hundred fifty-two".