142542207 has 8 divisors (see below), whose sum is σ = 211173680. Its totient is φ = 95028120.

The previous prime is 142542203. The next prime is 142542217. The reversal of 142542207 is 702245241.

It is not a de Polignac number, because 142542207 - 2² = 142542203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 5279341 = 142542207 / (1 + 4 + 2 + 5 + 4 + 2 + 2 + 0 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142542203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2639644 + ... + 2639697.

It is an arithmetic number, because the mean of its divisors is an integer number (26396710).

Almost surely, 2^142542207 is an apocalyptic number.

142542207 is a deficient number, since it is larger than the sum of its proper divisors (68631473).

142542207 is an equidigital number, since it uses as much as digits as its factorization.

142542207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5279350 (or 5279344 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 142542207 is about 11939.1041121183. The cubic root of 142542207 is about 522.3735270764.

Adding to 142542207 its reverse (702245241), we get a palindrome (844787448).

It can be divided in two parts, 14254 and 2207, that added together give a palindrome (16461).

The spelling of 142542207 in words is "one hundred forty-two million, five hundred forty-two thousand, two hundred seven".