142023101 has 4 divisors (see below), whose sum is σ = 154934304. Its totient is φ = 129111900.

The previous prime is 142023097. The next prime is 142023181. The reversal of 142023101 is 101320241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101320241 = 11 ⋅9210931.

It is a cyclic number.

It is not a de Polignac number, because 142023101 - 2² = 142023097 is a prime.

It is a super-2 number, since 2×142023101² = 40341122435312402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142023181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6455585 + ... + 6455606.

It is an arithmetic number, because the mean of its divisors is an integer number (38733576).

Almost surely, 2^142023101 is an apocalyptic number.

142023101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142023101 is a deficient number, since it is larger than the sum of its proper divisors (12911203).

142023101 is a wasteful number, since it uses less digits than its factorization.

142023101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12911202.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 142023101 is about 11917.3445448221. The cubic root of 142023101 is about 521.7386342454.

Adding to 142023101 its reverse (101320241), we get a palindrome (243343342).

The spelling of 142023101 in words is "one hundred forty-two million, twenty-three thousand, one hundred one".