4015402 has 4 divisors (see below), whose sum is σ = 6023106. Its totient is φ = 2007700.

The previous prime is 4015381. The next prime is 4015411. The reversal of 4015402 is 2045104.

4015402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2217121 + 1798281 = 1489^2 + 1341^2 .

It is a super-2 number, since 2×4015402² = 32246906443208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1003849 + ... + 1003852.

Almost surely, 2^4015402 is an apocalyptic number.

4015402 is a deficient number, since it is larger than the sum of its proper divisors (2007704).

4015402 is a wasteful number, since it uses less digits than its factorization.

4015402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007703.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 4015402 is about 2003.8468005314. The cubic root of 4015402 is about 158.9435871758.

The spelling of 4015402 in words is "four million, fifteen thousand, four hundred two".