42362121 has 16 divisors (see below), whose sum is σ = 58121280. Its totient is φ = 27433920.

The previous prime is 42362071. The next prime is 42362123. The reversal of 42362121 is 12126324.

It is not a de Polignac number, because 42362121 - 2¹⁸ = 42099977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42362123) 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, 13795 + ... + 16583.

It is an arithmetic number, because the mean of its divisors is an integer number (3632580).

Almost surely, 2^42362121 is an apocalyptic number.

It is an amenable number.

42362121 is a deficient number, since it is larger than the sum of its proper divisors (15759159).

42362121 is a wasteful number, since it uses less digits than its factorization.

42362121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2936.

The product of its digits is 576, while the sum is 21.

The square root of 42362121 is about 6508.6189779399. The cubic root of 42362121 is about 348.5988088367.

Adding to 42362121 its reverse (12126324), we get a palindrome (54488445).

The spelling of 42362121 in words is "forty-two million, three hundred sixty-two thousand, one hundred twenty-one".