42231400 has 48 divisors (see below), whose sum is σ = 103972140. Its totient is φ = 15897600.

The previous prime is 42231389. The next prime is 42231403. The reversal of 42231400 is 413224.

It can be written as a sum of positive squares in 6 ways, for example, as 33339076 + 8892324 = 5774^2 + 2982^2 .

It is a super-2 number, since 2×42231400² = 3566982291920000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42231403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2811 + ... + 9610.

Almost surely, 2^42231400 is an apocalyptic number.

42231400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42231400 is an abundant number, since it is smaller than the sum of its proper divisors (61740740).

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

42231400 is a wasteful number, since it uses less digits than its factorization.

42231400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12454 (or 12445 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 42231400 is about 6498.5690732653. The cubic root of 42231400 is about 348.2398707352.

Adding to 42231400 its reverse (413224), we get a palindrome (42644624).

The spelling of 42231400 in words is "forty-two million, two hundred thirty-one thousand, four hundred".