153542440 has 16 divisors (see below), whose sum is σ = 345470580. Its totient is φ = 61416960.

The previous prime is 153542407. The next prime is 153542449. The reversal of 153542440 is 44245351.

153542440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 148693636 + 4848804 = 12194^2 + 2202^2 .

It is a junction number, because it is equal to n+sod(n) for n = 153542399 and 153542408.

It is not an unprimeable number, because it can be changed into a prime (153542449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1919241 + ... + 1919320.

Almost surely, 2^153542440 is an apocalyptic number.

153542440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

153542440 is an abundant number, since it is smaller than the sum of its proper divisors (191928140).

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

153542440 is a wasteful number, since it uses less digits than its factorization.

153542440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3838572 (or 3838568 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 153542440 is about 12391.2243140055. The cubic root of 153542440 is about 535.4794549011.

Adding to 153542440 its reverse (44245351), we get a palindrome (197787791).

The spelling of 153542440 in words is "one hundred fifty-three million, five hundred forty-two thousand, four hundred forty".