134215540 has 24 divisors (see below), whose sum is σ = 282483432. Its totient is φ = 53566080.

The previous prime is 134215507. The next prime is 134215553. The reversal of 134215540 is 45512431.

It is a happy number.

134215540 is digitally balanced in base 3, 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 4 ways, for example, as 258064 + 133957476 = 508^2 + 11574^2 .

It is a super-2 number, since 2×134215540² = 36027622354983200, which contains 22 as substring.

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, 1942 + ... + 16498.

It is an arithmetic number, because the mean of its divisors is an integer number (11770143).

Almost surely, 2^134215540 is an apocalyptic number.

134215540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

134215540 is an abundant number, since it is smaller than the sum of its proper divisors (148267892).

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

134215540 is a wasteful number, since it uses less digits than its factorization.

134215540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15027 (or 15025 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 134215540 is about 11585.1430720557. The cubic root of 134215540 is about 511.9972177990.

Adding to 134215540 its reverse (45512431), we get a palindrome (179727971).

The spelling of 134215540 in words is "one hundred thirty-four million, two hundred fifteen thousand, five hundred forty".