42151550 has 48 divisors (see below), whose sum is σ = 90744192. Its totient is φ = 14268000.

The previous prime is 42151523. The next prime is 42151553. The reversal of 42151550 is 5515124.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42151553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28325 + ... + 29775.

It is an arithmetic number, because the mean of its divisors is an integer number (1890504).

Almost surely, 2^42151550 is an apocalyptic number.

42151550 is an abundant number, since it is smaller than the sum of its proper divisors (48592642).

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

42151550 is a wasteful number, since it uses less digits than its factorization.

42151550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553 (or 1548 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 42151550 is about 6492.4225062761. The cubic root of 42151550 is about 348.0202513868.

Adding to 42151550 its reverse (5515124), we get a palindrome (47666674).

The spelling of 42151550 in words is "forty-two million, one hundred fifty-one thousand, five hundred fifty".