101142051 has 4 divisors (see below), whose sum is σ = 134856072. Its totient is φ = 67428032.

The previous prime is 101142049. The next prime is 101142077. The reversal of 101142051 is 150241101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150241101 = 3 ⋅50080367.

It is a cyclic number.

It is not a de Polignac number, because 101142051 - 2¹ = 101142049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101142051.

It is not an unprimeable number, because it can be changed into a prime (101142001) 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, 16857006 + ... + 16857011.

It is an arithmetic number, because the mean of its divisors is an integer number (33714018).

Almost surely, 2^101142051 is an apocalyptic number.

101142051 is a deficient number, since it is larger than the sum of its proper divisors (33714021).

101142051 is an equidigital number, since it uses as much as digits as its factorization.

101142051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33714020.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 101142051 is about 10056.9404393185. The cubic root of 101142051 is about 465.9191761807.

Adding to 101142051 its reverse (150241101), we get a palindrome (251383152).

The spelling of 101142051 in words is "one hundred one million, one hundred forty-two thousand, fifty-one".