142402215 has 16 divisors (see below), whose sum is σ = 231054336. Its totient is φ = 74877600.

The previous prime is 142402201. The next prime is 142402219. The reversal of 142402215 is 512204241.

It is not a de Polignac number, because 142402215 - 2⁴ = 142402199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142402191 and 142402200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142402219) 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, 65791 + ... + 67920.

It is an arithmetic number, because the mean of its divisors is an integer number (14440896).

Almost surely, 2^142402215 is an apocalyptic number.

142402215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

142402215 is a deficient number, since it is larger than the sum of its proper divisors (88652121).

142402215 is a wasteful number, since it uses less digits than its factorization.

142402215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133790.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 142402215 is about 11933.2399204910. The cubic root of 142402215 is about 522.2024617961.

Adding to 142402215 its reverse (512204241), we get a palindrome (654606456).

The spelling of 142402215 in words is "one hundred forty-two million, four hundred two thousand, two hundred fifteen".