402226157 has 4 divisors (see below), whose sum is σ = 403095360. Its totient is φ = 401356956.

The previous prime is 402226133. The next prime is 402226159. The reversal of 402226157 is 751622204.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402226157 - 2²² = 398031853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402226159) 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, 433907 + ... + 434832.

It is an arithmetic number, because the mean of its divisors is an integer number (100773840).

Almost surely, 2^402226157 is an apocalyptic number.

It is an amenable number.

402226157 is a deficient number, since it is larger than the sum of its proper divisors (869203).

402226157 is an equidigital number, since it uses as much as digits as its factorization.

402226157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869202.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 402226157 is about 20055.5767057445. The cubic root of 402226157 is about 738.1706438976.

The spelling of 402226157 in words is "four hundred two million, two hundred twenty-six thousand, one hundred fifty-seven".