154842047 has 2 divisors, whose sum is σ = 154842048. Its totient is φ = 154842046.

The previous prime is 154842043. The next prime is 154842053. The reversal of 154842047 is 740248451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 154842047 - 2² = 154842043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 154841998 and 154842016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154842041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77421023 + 77421024.

It is an arithmetic number, because the mean of its divisors is an integer number (77421024).

Almost surely, 2^154842047 is an apocalyptic number.

154842047 is a deficient number, since it is larger than the sum of its proper divisors (1).

154842047 is an equidigital number, since it uses as much as digits as its factorization.

154842047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35840, while the sum is 35.

The square root of 154842047 is about 12443.5544359319. The cubic root of 154842047 is about 536.9860059906.

The spelling of 154842047 in words is "one hundred fifty-four million, eight hundred forty-two thousand, forty-seven".