40420154 has 8 divisors (see below), whose sum is σ = 63266400. Its totient is φ = 19331356.

The previous prime is 40420147. The next prime is 40420157. The reversal of 40420154 is 45102404.

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 (40420157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439304 + ... + 439395.

It is an arithmetic number, because the mean of its divisors is an integer number (7908300).

Almost surely, 2^40420154 is an apocalyptic number.

40420154 is a deficient number, since it is larger than the sum of its proper divisors (22846246).

40420154 is a wasteful number, since it uses less digits than its factorization.

40420154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878724.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 40420154 is about 6357.6846414398. The cubic root of 40420154 is about 343.1884431732.

Adding to 40420154 its reverse (45102404), we get a palindrome (85522558).

The spelling of 40420154 in words is "forty million, four hundred twenty thousand, one hundred fifty-four".