142030331 has 8 divisors (see below), whose sum is σ = 143458128. Its totient is φ = 140608000.

The previous prime is 142030321. The next prime is 142030337. The reversal of 142030331 is 133030241.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 9-Lehmer number, since φ(142030331) divides (142030331-1)⁹.

It is a cyclic number.

It is not a de Polignac number, because 142030331 - 2¹⁴ = 142013947 is a prime.

It is a super-2 number, since 2×142030331² = 40345229847939122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142030337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67211 + ... + 69291.

It is an arithmetic number, because the mean of its divisors is an integer number (17932266).

Almost surely, 2^142030331 is an apocalyptic number.

142030331 is a deficient number, since it is larger than the sum of its proper divisors (1427797).

142030331 is a wasteful number, since it uses less digits than its factorization.

142030331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2733.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 142030331 is about 11917.6478803495. The cubic root of 142030331 is about 521.7474875148.

Adding to 142030331 its reverse (133030241), we get a palindrome (275060572).

The spelling of 142030331 in words is "one hundred forty-two million, thirty thousand, three hundred thirty-one".