1258276940 has 24 divisors (see below), whose sum is σ = 2733499440. Its totient is φ = 485955008.

The previous prime is 1258276937. The next prime is 1258276961. The reversal of 1258276940 is 496728521.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1258276891 and 1258276900.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1084142 + ... + 1085301.

It is an arithmetic number, because the mean of its divisors is an integer number (113895810).

Almost surely, 2^1258276940 is an apocalyptic number.

1258276940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1258276940 is an abundant number, since it is smaller than the sum of its proper divisors (1475222500).

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

1258276940 is a wasteful number, since it uses less digits than its factorization.

1258276940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2169481 (or 2169479 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 1258276940 is about 35472.1995371023. The cubic root of 1258276940 is about 1079.5897332865.

The spelling of 1258276940 in words is "one billion, two hundred fifty-eight million, two hundred seventy-six thousand, nine hundred forty".