20120419 has 16 divisors (see below), whose sum is σ = 22508640. Its totient is φ = 17832960.

The previous prime is 20120407. The next prime is 20120437. The reversal of 20120419 is 91402102.

It is a cyclic number.

It is not a de Polignac number, because 20120419 - 2¹³ = 20112227 is a prime.

It is a super-2 number, since 2×20120419² = 809662521471122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20120396 and 20120405.

It is not an unprimeable number, because it can be changed into a prime (20120459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116217 + ... + 116389.

It is an arithmetic number, because the mean of its divisors is an integer number (1406790).

Almost surely, 2^20120419 is an apocalyptic number.

20120419 is the 2398-th nonagonal number.

20120419 is a deficient number, since it is larger than the sum of its proper divisors (2388221).

20120419 is a wasteful number, since it uses less digits than its factorization.

20120419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 20120419 is about 4485.5790038745. The cubic root of 20120419 is about 271.9854510312.

The spelling of 20120419 in words is "twenty million, one hundred twenty thousand, four hundred nineteen".