1242001110 has 128 divisors (see below), whose sum is σ = 3543450624. Its totient is φ = 272701440.

The previous prime is 1242001091. The next prime is 1242001129. The reversal of 1242001110 is 111002421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1242001091) and next prime (1242001129).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 575794 + ... + 577946.

It is an arithmetic number, because the mean of its divisors is an integer number (27683208).

Almost surely, 2^1242001110 is an apocalyptic number.

1242001110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242001110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1771725312).

1242001110 is an abundant number, since it is smaller than the sum of its proper divisors (2301449514).

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

1242001110 is a wasteful number, since it uses less digits than its factorization.

1242001110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2278.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1242001110 is about 35242.0361216545. The cubic root of 1242001110 is about 1074.9146815288.

Adding to 1242001110 its reverse (111002421), we get a palindrome (1353003531).

The spelling of 1242001110 in words is "one billion, two hundred forty-two million, one thousand, one hundred ten".