1240475378 has 4 divisors (see below), whose sum is σ = 1860713070. Its totient is φ = 620237688.

The previous prime is 1240475351. The next prime is 1240475387. The reversal of 1240475378 is 8735740421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8735740421 = 73 ⋅119667677.

It can be written as a sum of positive squares in only one way, i.e., 811281289 + 429194089 = 28483^2 + 20717^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310118843 + ... + 310118846.

Almost surely, 2^1240475378 is an apocalyptic number.

1240475378 is a deficient number, since it is larger than the sum of its proper divisors (620237692).

1240475378 is an equidigital number, since it uses as much as digits as its factorization.

1240475378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620237691.

The product of its (nonzero) digits is 188160, while the sum is 41.

The square root of 1240475378 is about 35220.3829905355. The cubic root of 1240475378 is about 1074.4743427518.

The spelling of 1240475378 in words is "one billion, two hundred forty million, four hundred seventy-five thousand, three hundred seventy-eight".