142220013 has 32 divisors (see below), whose sum is σ = 208365696. Its totient is φ = 85763328.

The previous prime is 142219999. The next prime is 142220027. The reversal of 142220013 is 310022241.

It is an interprime number because it is at equal distance from previous prime (142219999) and next prime (142220027).

It is not a de Polignac number, because 142220013 - 2⁵ = 142219981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142219974 and 142220001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142220093) 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, 721831 + ... + 722027.

It is an arithmetic number, because the mean of its divisors is an integer number (6511428).

Almost surely, 2^142220013 is an apocalyptic number.

142220013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

142220013 is a deficient number, since it is larger than the sum of its proper divisors (66145683).

142220013 is a wasteful number, since it uses less digits than its factorization.

142220013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 142220013 is about 11925.6032551817. The cubic root of 142220013 is about 521.9796493879.

Adding to 142220013 its reverse (310022241), we get a palindrome (452242254).

The spelling of 142220013 in words is "one hundred forty-two million, two hundred twenty thousand, thirteen".