1274401020 has 96 divisors (see below), whose sum is σ = 3784757760. Its totient is φ = 319714560.

The previous prime is 1274401013. The next prime is 1274401031. The reversal of 1274401020 is 201044721.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76611 + ... + 91749.

It is an arithmetic number, because the mean of its divisors is an integer number (39424560).

Almost surely, 2^1274401020 is an apocalyptic number.

1274401020 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 1274401020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1892378880).

1274401020 is an abundant number, since it is smaller than the sum of its proper divisors (2510356740).

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

1274401020 is a wasteful number, since it uses less digits than its factorization.

1274401020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15235 (or 15233 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 1274401020 is about 35698.7537597603. The cubic root of 1274401020 is about 1084.1816108438.

Adding to 1274401020 its reverse (201044721), we get a palindrome (1475445741).

The spelling of 1274401020 in words is "one billion, two hundred seventy-four million, four hundred one thousand, twenty".