136140040 has 32 divisors (see below), whose sum is σ = 312099480. Its totient is φ = 53427712.

The previous prime is 136140023. The next prime is 136140041. The reversal of 136140040 is 40041631.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 108451396 + 27688644 = 10414^2 + 5262^2 .

It is a super-2 number, since 2×136140040² = 37068220982403200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136140041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29989 + ... + 34228.

Almost surely, 2^136140040 is an apocalyptic number.

136140040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136140040 is an abundant number, since it is smaller than the sum of its proper divisors (175959440).

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

136140040 is a wasteful number, since it uses less digits than its factorization.

136140040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64281 (or 64277 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 136140040 is about 11667.9064103206. The cubic root of 136140040 is about 514.4327685001.

Adding to 136140040 its reverse (40041631), we get a palindrome (176181671).

The spelling of 136140040 in words is "one hundred thirty-six million, one hundred forty thousand, forty".