142033431 has 8 divisors (see below), whose sum is σ = 191115760. Its totient is φ = 93820032.

The previous prime is 142033373. The next prime is 142033439. The reversal of 142033431 is 134330241.

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

It is not a de Polignac number, because 142033431 - 2¹³ = 142025239 is a prime.

It is a super-2 number, since 2×142033431² = 40346991043263522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142033398 and 142033407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142033439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216850 + ... + 217503.

It is an arithmetic number, because the mean of its divisors is an integer number (23889470).

Almost surely, 2^142033431 is an apocalyptic number.

142033431 is a deficient number, since it is larger than the sum of its proper divisors (49082329).

142033431 is a wasteful number, since it uses less digits than its factorization.

142033431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434465.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 142033431 is about 11917.7779388609. Note that the first 3 decimals coincide. The cubic root of 142033431 is about 521.7512834304.

Adding to 142033431 its reverse (134330241), we get a palindrome (276363672).

The spelling of 142033431 in words is "one hundred forty-two million, thirty-three thousand, four hundred thirty-one".