142207031 has 12 divisors (see below), whose sum is σ = 146553120. Its totient is φ = 137966400.

The previous prime is 142207027. The next prime is 142207033. The reversal of 142207031 is 130702241.

It is not a de Polignac number, because 142207031 - 2² = 142207027 is a prime.

It is a super-2 number, since 2×142207031² = 40445679331669922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142206994 and 142207012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142207033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 354431 + ... + 354831.

It is an arithmetic number, because the mean of its divisors is an integer number (12212760).

Almost surely, 2^142207031 is an apocalyptic number.

142207031 is a deficient number, since it is larger than the sum of its proper divisors (4346089).

142207031 is an frugal number, since it uses more digits than its factorization.

142207031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614 (or 547 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 142207031 is about 11925.0589516363. The cubic root of 142207031 is about 521.9637666115.

Adding to 142207031 its reverse (130702241), we get a palindrome (272909272).

The spelling of 142207031 in words is "one hundred forty-two million, two hundred seven thousand, thirty-one".