1102421544 has 128 divisors (see below), whose sum is σ = 3305318400. Its totient is φ = 299738880.

The previous prime is 1102421539. The next prime is 1102421561. The reversal of 1102421544 is 4451242011.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 344319 + ... + 347505.

It is an arithmetic number, because the mean of its divisors is an integer number (25822800).

Almost surely, 2^1102421544 is an apocalyptic number.

1102421544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1102421544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1652659200).

1102421544 is an abundant number, since it is smaller than the sum of its proper divisors (2202896856).

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

1102421544 is a wasteful number, since it uses less digits than its factorization.

1102421544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3303 (or 3299 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 1102421544 is about 33202.7339838152. The cubic root of 1102421544 is about 1033.0370486892.

Adding to 1102421544 its reverse (4451242011), we get a palindrome (5553663555).

The spelling of 1102421544 in words is "one billion, one hundred two million, four hundred twenty-one thousand, five hundred forty-four".