155120419 has 2 divisors, whose sum is σ = 155120420. Its totient is φ = 155120418.

The previous prime is 155120387. The next prime is 155120423. The reversal of 155120419 is 914021551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155120419 - 2⁵ = 155120387 is a prime.

It is a super-2 number, since 2×155120419² = 48124688781471122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (155120429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77560209 + 77560210.

It is an arithmetic number, because the mean of its divisors is an integer number (77560210).

Almost surely, 2^155120419 is an apocalyptic number.

155120419 is a deficient number, since it is larger than the sum of its proper divisors (1).

155120419 is an equidigital number, since it uses as much as digits as its factorization.

155120419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 155120419 is about 12454.7348024757. The cubic root of 155120419 is about 537.3076076533.

The spelling of 155120419 in words is "one hundred fifty-five million, one hundred twenty thousand, four hundred nineteen".