42234240 has 64 divisors (see below), whose sum is σ = 134627760. Its totient is φ = 11261952.

The previous prime is 42234229. The next prime is 42234251. The reversal of 42234240 is 4243224.

It is an interprime number because it is at equal distance from previous prime (42234229) and next prime (42234251).

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9079 + ... + 12918.

Almost surely, 2^42234240 is an apocalyptic number.

42234240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42234240 is an abundant number, since it is smaller than the sum of its proper divisors (92393520).

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

42234240 is a wasteful number, since it uses less digits than its factorization.

42234240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22019 (or 22007 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 42234240 is about 6498.7875792335. The cubic root of 42234240 is about 348.2476767679.

Adding to 42234240 its reverse (4243224), we get a palindrome (46477464).

The spelling of 42234240 in words is "forty-two million, two hundred thirty-four thousand, two hundred forty".