103511142 has 64 divisors (see below), whose sum is σ = 269337600. Its totient is φ = 28848960.

The previous prime is 103511137. The next prime is 103511143. The reversal of 103511142 is 241115301.

103511142 is a `hidden beast` number, since 10 + 3 + 511 + 142 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103511143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12159 + ... + 18837.

It is an arithmetic number, because the mean of its divisors is an integer number (4208400).

Almost surely, 2^103511142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103511142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134668800).

103511142 is an abundant number, since it is smaller than the sum of its proper divisors (165826458).

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

103511142 is a wasteful number, since it uses less digits than its factorization.

103511142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6738 (or 6732 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 103511142 is about 10174.0425593763. The cubic root of 103511142 is about 469.5289410448.

Adding to 103511142 its reverse (241115301), we get a palindrome (344626443).

The spelling of 103511142 in words is "one hundred three million, five hundred eleven thousand, one hundred forty-two".