154140605 has 4 divisors (see below), whose sum is σ = 184968732. Its totient is φ = 123312480.

The previous prime is 154140593. The next prime is 154140611. The reversal of 154140605 is 506041451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 506041451 = 89 ⋅5685859.

It can be written as a sum of positive squares in 2 ways, for example, as 65836996 + 88303609 = 8114^2 + 9397^2 .

It is not a de Polignac number, because 154140605 - 2¹² = 154136509 is a prime.

It is a super-2 number, since 2×154140605² = 47518652219532050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15414056 + ... + 15414065.

It is an arithmetic number, because the mean of its divisors is an integer number (46242183).

Almost surely, 2^154140605 is an apocalyptic number.

It is an amenable number.

154140605 is a deficient number, since it is larger than the sum of its proper divisors (30828127).

154140605 is an equidigital number, since it uses as much as digits as its factorization.

154140605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30828126.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 154140605 is about 12415.3374903786. The cubic root of 154140605 is about 536.1739209215.

The spelling of 154140605 in words is "one hundred fifty-four million, one hundred forty thousand, six hundred five".