1260430040 has 64 divisors (see below), whose sum is σ = 2874592800. Its totient is φ = 497348608.

The previous prime is 1260430033. The next prime is 1260430051. The reversal of 1260430040 is 400340621.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1260429994 and 1260430021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1356296 + ... + 1357224.

Almost surely, 2^1260430040 is an apocalyptic number.

1260430040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1260430040 is an abundant number, since it is smaller than the sum of its proper divisors (1614162760).

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

1260430040 is a wasteful number, since it uses less digits than its factorization.

1260430040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364 (or 1360 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1260430040 is about 35502.5356840888. The cubic root of 1260430040 is about 1080.2051622127.

Adding to 1260430040 its reverse (400340621), we get a palindrome (1660770661).

The spelling of 1260430040 in words is "one billion, two hundred sixty million, four hundred thirty thousand, forty".