42615342 has 128 divisors (see below), whose sum is σ = 121697280. Its totient is φ = 10730880.

The previous prime is 42615337. The next prime is 42615361. The reversal of 42615342 is 24351624.

42615342 is a `hidden beast` number, since 4 + 2 + 615 + 3 + 42 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 153708 + ... + 153984.

It is an arithmetic number, because the mean of its divisors is an integer number (950760).

Almost surely, 2^42615342 is an apocalyptic number.

42615342 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 42615342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60848640).

42615342 is an abundant number, since it is smaller than the sum of its proper divisors (79081938).

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

42615342 is a wasteful number, since it uses less digits than its factorization.

42615342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343 (or 337 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 42615342 is about 6528.0427388307. The cubic root of 42615342 is about 349.2920164684.

Adding to 42615342 its reverse (24351624), we get a palindrome (66966966).

The spelling of 42615342 in words is "forty-two million, six hundred fifteen thousand, three hundred forty-two".