2420156155 has 4 divisors (see below), whose sum is σ = 2904187392. Its totient is φ = 1936124920.

The previous prime is 2420156149. The next prime is 2420156171. The reversal of 2420156155 is 5516510242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5516510242 = 2 ⋅2758255121.

It is not a de Polignac number, because 2420156155 - 2³¹ = 272672507 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian 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, 242015611 + ... + 242015620.

It is an arithmetic number, because the mean of its divisors is an integer number (726046848).

Almost surely, 2^2420156155 is an apocalyptic number.

2420156155 is a deficient number, since it is larger than the sum of its proper divisors (484031237).

2420156155 is an equidigital number, since it uses as much as digits as its factorization.

2420156155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484031236.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 2420156155 is about 49195.0826302792. The cubic root of 2420156155 is about 1342.6035656723.

Adding to 2420156155 its reverse (5516510242), we get a palindrome (7936666397).

The spelling of 2420156155 in words is "two billion, four hundred twenty million, one hundred fifty-six thousand, one hundred fifty-five".