101201142 has 32 divisors (see below), whose sum is σ = 237572352. Its totient is φ = 28132704.

The previous prime is 101201131. The next prime is 101201171. The reversal of 101201142 is 241102101.

It is a happy number.

It is a super-2 number, since 2×101201142² = 20483342284208328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31008 + ... + 34115.

It is an arithmetic number, because the mean of its divisors is an integer number (7424136).

Almost surely, 2^101201142 is an apocalyptic number.

101201142 is an abundant number, since it is smaller than the sum of its proper divisors (136371210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101201142 is a wasteful number, since it uses less digits than its factorization.

101201142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65172.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 101201142 is about 10059.8778322602. The cubic root of 101201142 is about 466.0098943665.

Adding to 101201142 its reverse (241102101), we get a palindrome (342303243).

The spelling of 101201142 in words is "one hundred one million, two hundred one thousand, one hundred forty-two".