400252105 has 16 divisors (see below), whose sum is σ = 526176000. Its totient is φ = 289864960.

The previous prime is 400252103. The next prime is 400252109. The reversal of 400252105 is 501252004.

It is not a de Polignac number, because 400252105 - 2¹ = 400252103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400252103) 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, 2080 + ... + 28369.

It is an arithmetic number, because the mean of its divisors is an integer number (32886000).

Almost surely, 2^400252105 is an apocalyptic number.

It is an amenable number.

400252105 is a deficient number, since it is larger than the sum of its proper divisors (125923895).

400252105 is a wasteful number, since it uses less digits than its factorization.

400252105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30704.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 400252105 is about 20006.3016322358. The cubic root of 400252105 is about 736.9610610127.

The spelling of 400252105 in words is "four hundred million, two hundred fifty-two thousand, one hundred five".