40123630 has 16 divisors (see below), whose sum is σ = 76024080. Its totient is φ = 15204672.

The previous prime is 40123619. The next prime is 40123631. The reversal of 40123630 is 3632104.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 40123598 and 40123607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40123631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105399 + ... + 105778.

It is an arithmetic number, because the mean of its divisors is an integer number (4751505).

Almost surely, 2^40123630 is an apocalyptic number.

40123630 is a deficient number, since it is larger than the sum of its proper divisors (35900450).

40123630 is a wasteful number, since it uses less digits than its factorization.

40123630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211203.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 40123630 is about 6334.3215895627. The cubic root of 40123630 is about 342.3471675023.

Adding to 40123630 its reverse (3632104), we get a palindrome (43755734).

The spelling of 40123630 in words is "forty million, one hundred twenty-three thousand, six hundred thirty".