201236442 has 32 divisors (see below), whose sum is σ = 447353280. Its totient is φ = 59829120.

The previous prime is 201236437. The next prime is 201236447. The reversal of 201236442 is 244632102.

It is an interprime number because it is at equal distance from previous prime (201236437) and next prime (201236447).

It is a super-2 number, since 2×201236442² = 80992211177638728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201236447) 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, 25267 + ... + 32262.

It is an arithmetic number, because the mean of its divisors is an integer number (13979790).

Almost surely, 2^201236442 is an apocalyptic number.

201236442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

201236442 is an abundant number, since it is smaller than the sum of its proper divisors (246116838).

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

201236442 is a wasteful number, since it uses less digits than its factorization.

201236442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57598.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 201236442 is about 14185.7830943519. The cubic root of 201236442 is about 586.0061988030.

Adding to 201236442 its reverse (244632102), we get a palindrome (445868544).

It can be divided in two parts, 20123 and 6442, that added together give a triangular number (26565 = T₂₃₀).

The spelling of 201236442 in words is "two hundred one million, two hundred thirty-six thousand, four hundred forty-two".