1197405040 has 80 divisors (see below), whose sum is σ = 3007620000. Its totient is φ = 440718336.

The previous prime is 1197405031. The next prime is 1197405103. The reversal of 1197405040 is 405047911.

1197405040 = 4260² + 4261² + ... + 4324².

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1197404993 and 1197405011.

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, 361311 + ... + 364609.

It is an arithmetic number, because the mean of its divisors is an integer number (37595250).

Almost surely, 2^1197405040 is an apocalyptic number.

1197405040 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 1197405040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1503810000).

1197405040 is an abundant number, since it is smaller than the sum of its proper divisors (1810214960).

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

1197405040 is a wasteful number, since it uses less digits than its factorization.

1197405040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3674 (or 3668 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 1197405040 is about 34603.5408592820. The cubic root of 1197405040 is about 1061.8920284659.

The spelling of 1197405040 in words is "one billion, one hundred ninety-seven million, four hundred five thousand, forty".