1101205420 has 72 divisors (see below), whose sum is σ = 2831718960. Its totient is φ = 357678720.

The previous prime is 1101205403. The next prime is 1101205423. The reversal of 1101205420 is 245021011.

It is a junction number, because it is equal to n+sod(n) for n = 1101205394 and 1101205403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101205423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10951 + ... + 48190.

It is an arithmetic number, because the mean of its divisors is an integer number (39329430).

Almost surely, 2^1101205420 is an apocalyptic number.

1101205420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101205420 is an abundant number, since it is smaller than the sum of its proper divisors (1730513540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1101205420 is a wasteful number, since it uses less digits than its factorization.

1101205420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59183 (or 59174 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1101205420 is about 33184.4153180375. The cubic root of 1101205420 is about 1032.6570478338.

Adding to 1101205420 its reverse (245021011), we get a palindrome (1346226431).

The spelling of 1101205420 in words is "one billion, one hundred one million, two hundred five thousand, four hundred twenty".