2040157402 has 8 divisors (see below), whose sum is σ = 3062893716. Its totient is φ = 1019192832.

The previous prime is 2040157397. The next prime is 2040157409. The reversal of 2040157402 is 2047510402.

It can be written as a sum of positive squares in 2 ways, for example, as 1723993441 + 316163961 = 41521^2 + 17781^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2040157409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440053 + ... + 444664.

Almost surely, 2^2040157402 is an apocalyptic number.

2040157402 is a deficient number, since it is larger than the sum of its proper divisors (1022736314).

2040157402 is a wasteful number, since it uses less digits than its factorization.

2040157402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885872.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 2040157402 is about 45168.1015983625. The cubic root of 2040157402 is about 1268.2977591057.

Adding to 2040157402 its reverse (2047510402), we get a palindrome (4087667804).

The spelling of 2040157402 in words is "two billion, forty million, one hundred fifty-seven thousand, four hundred two".