1281142038 has 32 divisors (see below), whose sum is σ = 2802648960. Its totient is φ = 387192960.

The previous prime is 1281142001. The next prime is 1281142039. The reversal of 1281142038 is 8302411821.

It is a junction number, because it is equal to n+sod(n) for n = 1281141996 and 1281142014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1281142039) 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, 595 + ... + 50622.

It is an arithmetic number, because the mean of its divisors is an integer number (87582780).

Almost surely, 2^1281142038 is an apocalyptic number.

1281142038 is an abundant number, since it is smaller than the sum of its proper divisors (1521506922).

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

1281142038 is a wasteful number, since it uses less digits than its factorization.

1281142038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51612.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 1281142038 is about 35793.0445477889. The cubic root of 1281142038 is about 1086.0898639895.

Adding to 1281142038 its reverse (8302411821), we get a palindrome (9583553859).

The spelling of 1281142038 in words is "one billion, two hundred eighty-one million, one hundred forty-two thousand, thirty-eight".