1302542540 has 48 divisors (see below), whose sum is σ = 3047345280. Its totient is φ = 464352000.

The previous prime is 1302542519. The next prime is 1302542543. The reversal of 1302542540 is 452452031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (1302542543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78836 + ... + 93915.

It is an arithmetic number, because the mean of its divisors is an integer number (63486360).

Almost surely, 2^1302542540 is an apocalyptic number.

1302542540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1302542540 is an abundant number, since it is smaller than the sum of its proper divisors (1744802740).

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

1302542540 is a wasteful number, since it uses less digits than its factorization.

1302542540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172802 (or 172800 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1302542540 is about 36090.7542176663. The cubic root of 1302542540 is about 1092.1039351041.

Adding to 1302542540 its reverse (452452031), we get a palindrome (1754994571).

The spelling of 1302542540 in words is "one billion, three hundred two million, five hundred forty-two thousand, five hundred forty".