156040100 has 72 divisors (see below), whose sum is σ = 351180648. Its totient is φ = 60134400.

The previous prime is 156040091. The next prime is 156040121. The reversal of 156040100 is 1040651.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 81252196 + 74787904 = 9014^2 + 8648^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 669584 + ... + 669816.

It is an arithmetic number, because the mean of its divisors is an integer number (4877509).

Almost surely, 2^156040100 is an apocalyptic number.

156040100 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 156040100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175590324).

156040100 is an abundant number, since it is smaller than the sum of its proper divisors (195140548).

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

156040100 is a wasteful number, since it uses less digits than its factorization.

156040100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 156040100 is about 12491.6011783918. The cubic root of 156040100 is about 538.3673826472.

Adding to 156040100 its reverse (1040651), we get a palindrome (157080751).

The spelling of 156040100 in words is "one hundred fifty-six million, forty thousand, one hundred".