400122115 has 16 divisors (see below), whose sum is σ = 524793600. Its totient is φ = 291548160.

The previous prime is 400122103. The next prime is 400122127. The reversal of 400122115 is 511221004.

It is an interprime number because it is at equal distance from previous prime (400122103) and next prime (400122127).

It is not a de Polignac number, because 400122115 - 2¹¹ = 400120067 is a prime.

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, 73290 + ... + 78559.

It is an arithmetic number, because the mean of its divisors is an integer number (32799600).

Almost surely, 2^400122115 is an apocalyptic number.

400122115 is a deficient number, since it is larger than the sum of its proper divisors (124671485).

400122115 is a wasteful number, since it uses less digits than its factorization.

400122115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151902.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 400122115 is about 20003.0526420344. The cubic root of 400122115 is about 736.8812713504.

Adding to 400122115 its reverse (511221004), we get a palindrome (911343119).

The spelling of 400122115 in words is "four hundred million, one hundred twenty-two thousand, one hundred fifteen".