42402550 has 12 divisors (see below), whose sum is σ = 78868836. Its totient is φ = 16961000.

The previous prime is 42402523. The next prime is 42402551. The reversal of 42402550 is 5520424.

It is a super-3 number, since 3×42402550³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42402551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 423976 + ... + 424075.

It is an arithmetic number, because the mean of its divisors is an integer number (6572403).

Almost surely, 2^42402550 is an apocalyptic number.

42402550 is a deficient number, since it is larger than the sum of its proper divisors (36466286).

42402550 is a wasteful number, since it uses less digits than its factorization.

42402550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848063 (or 848058 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 42402550 is about 6511.7240420644. The cubic root of 42402550 is about 348.7096706147.

Adding to 42402550 its reverse (5520424), we get a palindrome (47922974).

The spelling of 42402550 in words is "forty-two million, four hundred two thousand, five hundred fifty".