40200402 has 32 divisors (see below), whose sum is σ = 89028864. Its totient is φ = 11998800.

The previous prime is 40200373. The next prime is 40200421. The reversal of 40200402 is 20400204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124 + ... + 8967.

It is an arithmetic number, because the mean of its divisors is an integer number (2782152).

Almost surely, 2^40200402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40200402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44514432).

40200402 is an abundant number, since it is smaller than the sum of its proper divisors (48828462).

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

40200402 is a wasteful number, since it uses less digits than its factorization.

40200402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9174.

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 40200402 is about 6340.3786953147. The cubic root of 40200402 is about 342.5653758380.

Adding to 40200402 its reverse (20400204), we get a palindrome (60600606).

It can be divided in two parts, 40200 and 402, that multiplied together give a square (16160400 = 4020²).

The spelling of 40200402 in words is "forty million, two hundred thousand, four hundred two".