154140971 has 2 divisors, whose sum is σ = 154140972. Its totient is φ = 154140970.

The previous prime is 154140967. The next prime is 154140983. The reversal of 154140971 is 179041451.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 154140971 - 2² = 154140967 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (154142971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77070485 + 77070486.

It is an arithmetic number, because the mean of its divisors is an integer number (77070486).

Almost surely, 2^154140971 is an apocalyptic number.

154140971 is a deficient number, since it is larger than the sum of its proper divisors (1).

154140971 is an equidigital number, since it uses as much as digits as its factorization.

154140971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 154140971 is about 12415.3522302027. The cubic root of 154140971 is about 536.1743452948.

The spelling of 154140971 in words is "one hundred fifty-four million, one hundred forty thousand, nine hundred seventy-one".