101027138 has 16 divisors (see below), whose sum is σ = 153518976. Its totient is φ = 49857600.

The previous prime is 101027137. The next prime is 101027159. The reversal of 101027138 is 831720101.

It is a happy number.

It is a super-2 number, since 2×101027138² = 20412965224942088, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (101027137) 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, 81995 + ... + 83217.

It is an arithmetic number, because the mean of its divisors is an integer number (9594936).

Almost surely, 2^101027138 is an apocalyptic number.

101027138 is a deficient number, since it is larger than the sum of its proper divisors (52491838).

101027138 is a wasteful number, since it uses less digits than its factorization.

101027138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 101027138 is about 10051.2256964014. The cubic root of 101027138 is about 465.7426572511.

Adding to 101027138 its reverse (831720101), we get a palindrome (932747239).

The spelling of 101027138 in words is "one hundred one million, twenty-seven thousand, one hundred thirty-eight".