136240429 has 4 divisors (see below), whose sum is σ = 146720476. Its totient is φ = 125760384.

The previous prime is 136240367. The next prime is 136240439. The reversal of 136240429 is 924042631.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22071204 + 114169225 = 4698^2 + 10685^2 .

It is a cyclic number.

It is not a de Polignac number, because 136240429 - 2¹¹ = 136238381 is a prime.

It is a super-2 number, since 2×136240429² = 37122908988208082, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136240429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136240439) 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, 5240004 + ... + 5240029.

It is an arithmetic number, because the mean of its divisors is an integer number (36680119).

Almost surely, 2^136240429 is an apocalyptic number.

It is an amenable number.

136240429 is a deficient number, since it is larger than the sum of its proper divisors (10480047).

136240429 is a wasteful number, since it uses less digits than its factorization.

136240429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10480046.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 136240429 is about 11672.2075461328. The cubic root of 136240429 is about 514.5591841687.

The spelling of 136240429 in words is "one hundred thirty-six million, two hundred forty thousand, four hundred twenty-nine".