142021023 has 8 divisors (see below), whose sum is σ = 189460608. Its totient is φ = 94631064.

The previous prime is 142021001. The next prime is 142021031. The reversal of 142021023 is 320120241.

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

It is not a de Polignac number, because 142021023 - 2¹³ = 142012831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142020993 and 142021011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142026023) 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, 5115 + ... + 17612.

It is an arithmetic number, because the mean of its divisors is an integer number (23682576).

Almost surely, 2^142021023 is an apocalyptic number.

142021023 is a deficient number, since it is larger than the sum of its proper divisors (47439585).

142021023 is a wasteful number, since it uses less digits than its factorization.

142021023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24813.

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

The square root of 142021023 is about 11917.2573606514. The cubic root of 142021023 is about 521.7360896402.

Adding to 142021023 its reverse (320120241), we get a palindrome (462141264).

It can be divided in two parts, 14202 and 1023, that added together give a triangular number (15225 = T₁₇₄).

The spelling of 142021023 in words is "one hundred forty-two million, twenty-one thousand, twenty-three".