1342240020 has 144 divisors (see below), whose sum is σ = 4498341120. Its totient is φ = 321235200.

The previous prime is 1342240007. The next prime is 1342240027. The reversal of 1342240020 is 200422431.

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 = 1342239975 and 1342240002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1342240027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 152130 + ... + 160710.

It is an arithmetic number, because the mean of its divisors is an integer number (31238480).

Almost surely, 2^1342240020 is an apocalyptic number.

1342240020 is a gapful number since it is divisible by the number (10) 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 1342240020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2249170560).

1342240020 is an abundant number, since it is smaller than the sum of its proper divisors (3156101100).

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

1342240020 is a wasteful number, since it uses less digits than its factorization.

1342240020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8686 (or 8681 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1342240020 is about 36636.5940010804. The cubic root of 1342240020 is about 1103.0877486852.

Adding to 1342240020 its reverse (200422431), we get a palindrome (1542662451).

The spelling of 1342240020 in words is "one billion, three hundred forty-two million, two hundred forty thousand, twenty".