1205562040 has 16 divisors (see below), whose sum is σ = 2712514680. Its totient is φ = 482224800.

The previous prime is 1205561999. The next prime is 1205562053. The reversal of 1205562040 is 402655021.

It is a junction number, because it is equal to n+sod(n) for n = 1205561996 and 1205562014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15069486 + ... + 15069565.

Almost surely, 2^1205562040 is an apocalyptic number.

1205562040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1205562040 is an abundant number, since it is smaller than the sum of its proper divisors (1506952640).

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

1205562040 is a wasteful number, since it uses less digits than its factorization.

1205562040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30139062 (or 30139058 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1205562040 is about 34721.2044721954. The cubic root of 1205562040 is about 1064.2978583620.

The spelling of 1205562040 in words is "one billion, two hundred five million, five hundred sixty-two thousand, forty".