103161240 has 384 divisors, whose sum is σ = 427714560. Its totient is φ = 20984832.

The previous prime is 103161239. The next prime is 103161269. The reversal of 103161240 is 42161301.

It is a happy number.

103161240 is a `hidden beast` number, since 10 + 3 + 1 + 612 + 40 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1539687 + ... + 1539753.

It is an arithmetic number, because the mean of its divisors is an integer number (1113840).

Almost surely, 2^103161240 is an apocalyptic number.

103161240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103161240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213857280).

103161240 is an abundant number, since it is smaller than the sum of its proper divisors (324553320).

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

103161240 is a wasteful number, since it uses less digits than its factorization.

103161240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 103161240 is about 10156.8321833139. The cubic root of 103161240 is about 468.9992892669. Note that the first 3 decimals are identical.

The spelling of 103161240 in words is "one hundred three million, one hundred sixty-one thousand, two hundred forty".