40257003 has 16 divisors (see below), whose sum is σ = 58669056. Its totient is φ = 24443520.

The previous prime is 40256989. The next prime is 40257013. The reversal of 40257003 is 30075204.

It is a happy number.

It is not a de Polignac number, because 40257003 - 2⁵ = 40256971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40257013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11151 + ... + 14312.

It is an arithmetic number, because the mean of its divisors is an integer number (3666816).

Almost surely, 2^40257003 is an apocalyptic number.

40257003 is a deficient number, since it is larger than the sum of its proper divisors (18412053).

40257003 is a wasteful number, since it uses less digits than its factorization.

40257003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25514.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 40257003 is about 6344.8406599378. The cubic root of 40257003 is about 342.7260744796.

It can be divided in two parts, 4025700 and 3, that added together give a triangular number (4025703 = T₂₈₃₇).

The spelling of 40257003 in words is "forty million, two hundred fifty-seven thousand, three".