2106421548 has 96 divisors (see below), whose sum is σ = 6450339840. Its totient is φ = 518322240.

The previous prime is 2106421547. The next prime is 2106421549. The reversal of 2106421548 is 8451246012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2106421547) and next prime (2106421549).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (2106421547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42436 + ... + 77547.

It is an arithmetic number, because the mean of its divisors is an integer number (67191040).

Almost surely, 2^2106421548 is an apocalyptic number.

2106421548 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2106421548 is an abundant number, since it is smaller than the sum of its proper divisors (4343918292).

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

2106421548 is a wasteful number, since it uses less digits than its factorization.

2106421548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120027 (or 120025 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 2106421548 is about 45895.7683016637. The cubic root of 2106421548 is about 1281.8831225797.

The spelling of 2106421548 in words is "two billion, one hundred six million, four hundred twenty-one thousand, five hundred forty-eight".