1201407040 has 28 divisors (see below), whose sum is σ = 2860851276. Its totient is φ = 480562688.

The previous prime is 1201407007. The next prime is 1201407049. The reversal of 1201407040 is 407041021.

It can be written as a sum of positive squares in 2 ways, for example, as 379782144 + 821624896 = 19488^2 + 28664^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1201406999 and 1201407017.

It is not an unprimeable number, because it can be changed into a prime (1201407049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1876879 + ... + 1877518.

Almost surely, 2^1201407040 is an apocalyptic number.

1201407040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201407040 is an abundant number, since it is smaller than the sum of its proper divisors (1659444236).

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

1201407040 is an equidigital number, since it uses as much as digits as its factorization.

1201407040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3754414 (or 3754404 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 1201407040 is about 34661.3190747265. The cubic root of 1201407040 is about 1063.0737411553.

Adding to 1201407040 its reverse (407041021), we get a palindrome (1608448061).

The spelling of 1201407040 in words is "one billion, two hundred one million, four hundred seven thousand, forty".