154420428139 has 2 divisors, whose sum is σ = 154420428140. Its totient is φ = 154420428138.

The previous prime is 154420428133. The next prime is 154420428161. The reversal of 154420428139 is 931824024451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 154420428139 - 2⁷ = 154420428011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 154420428095 and 154420428104.

It is not a weakly prime, because it can be changed into another prime (154420428133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77210214069 + 77210214070.

It is an arithmetic number, because the mean of its divisors is an integer number (77210214070).

Almost surely, 2^154420428139 is an apocalyptic number.

154420428139 is a deficient number, since it is larger than the sum of its proper divisors (1).

154420428139 is an equidigital number, since it uses as much as digits as its factorization.

154420428139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 154420428139 in words is "one hundred fifty-four billion, four hundred twenty million, four hundred twenty-eight thousand, one hundred thirty-nine".