240231442 has 8 divisors (see below), whose sum is σ = 393106032. Its totient is φ = 109196100.

The previous prime is 240231427. The next prime is 240231443. The reversal of 240231442 is 244132042.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×240231442² = 115422291450798728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 10919611 = 240231442 / (2 + 4 + 0 + 2 + 3 + 1 + 4 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (240231443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5459784 + ... + 5459827.

It is an arithmetic number, because the mean of its divisors is an integer number (49138254).

Almost surely, 2^240231442 is an apocalyptic number.

240231442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

240231442 is a deficient number, since it is larger than the sum of its proper divisors (152874590).

240231442 is a wasteful number, since it uses less digits than its factorization.

240231442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10919624.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 240231442 is about 15499.4013432777. The cubic root of 240231442 is about 621.6461992637.

Adding to 240231442 its reverse (244132042), we get a palindrome (484363484).

The spelling of 240231442 in words is "two hundred forty million, two hundred thirty-one thousand, four hundred forty-two".