240221542 has 64 divisors (see below), whose sum is σ = 425005056. Its totient is φ = 101640000.

The previous prime is 240221539. The next prime is 240221549. The reversal of 240221542 is 245122042.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240221549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3383367 + ... + 3383437.

It is an arithmetic number, because the mean of its divisors is an integer number (6640704).

Almost surely, 2^240221542 is an apocalyptic number.

240221542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

240221542 is a deficient number, since it is larger than the sum of its proper divisors (184783514).

240221542 is a wasteful number, since it uses less digits than its factorization.

240221542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 240221542 is about 15499.0819728137. The cubic root of 240221542 is about 621.6376597461.

Adding to 240221542 its reverse (245122042), we get a palindrome (485343584).

The spelling of 240221542 in words is "two hundred forty million, two hundred twenty-one thousand, five hundred forty-two".