20103150420 has 72 divisors (see below), whose sum is σ = 64566598824. Its totient is φ = 5045495808.

The previous prime is 20103150409. The next prime is 20103150427. The reversal of 20103150420 is 2405130102.

It can be written as a sum of positive squares in 4 ways, for example, as 7484672196 + 12618478224 = 86514^2 + 112332^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20103150393 and 20103150402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103150427) 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, 3281769 + ... + 3287888.

It is an arithmetic number, because the mean of its divisors is an integer number (896758317).

Almost surely, 2^20103150420 is an apocalyptic number.

20103150420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20103150420 is an abundant number, since it is smaller than the sum of its proper divisors (44463448404).

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

20103150420 is a wasteful number, since it uses less digits than its factorization.

20103150420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6569689 (or 6569684 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 20103150420 its reverse (2405130102), we get a palindrome (22508280522).

The spelling of 20103150420 in words is "twenty billion, one hundred three million, one hundred fifty thousand, four hundred twenty".