154013729 has 4 divisors (see below), whose sum is σ = 154316820. Its totient is φ = 153710640.

The previous prime is 154013723. The next prime is 154013747. The reversal of 154013729 is 927310451.

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 145323025 + 8690704 = 12055^2 + 2948^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154013729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 154013695 and 154013704.

It is not an unprimeable number, because it can be changed into a prime (154013723) 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, 150782 + ... + 151799.

It is an arithmetic number, because the mean of its divisors is an integer number (38579205).

Almost surely, 2^154013729 is an apocalyptic number.

It is an amenable number.

154013729 is a deficient number, since it is larger than the sum of its proper divisors (303091).

154013729 is an equidigital number, since it uses as much as digits as its factorization.

154013729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303090.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 154013729 is about 12410.2267908367. The cubic root of 154013729 is about 536.0267689627.

The spelling of 154013729 in words is "one hundred fifty-four million, thirteen thousand, seven hundred twenty-nine".