101232440 has 32 divisors (see below), whose sum is σ = 228206160. Its totient is φ = 40416000.

The previous prime is 101232419. The next prime is 101232457. The reversal of 101232440 is 44232101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21935 + ... + 26145.

Almost surely, 2^101232440 is an apocalyptic number.

101232440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101232440 is an abundant number, since it is smaller than the sum of its proper divisors (126973720).

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

101232440 is a wasteful number, since it uses less digits than its factorization.

101232440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4823 (or 4819 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 101232440 is about 10061.4332974979. The cubic root of 101232440 is about 466.0579296425.

Adding to 101232440 its reverse (44232101), we get a palindrome (145464541).

The spelling of 101232440 in words is "one hundred one million, two hundred thirty-two thousand, four hundred forty".