850123402 has 4 divisors (see below), whose sum is σ = 1275185106. Its totient is φ = 425061700.

The previous prime is 850123381. The next prime is 850123411. The reversal of 850123402 is 204321058.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 739894401 + 110229001 = 27201^2 + 10499^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212530849 + ... + 212530852.

Almost surely, 2^850123402 is an apocalyptic number.

850123402 is a deficient number, since it is larger than the sum of its proper divisors (425061704).

850123402 is a wasteful number, since it uses less digits than its factorization.

850123402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425061703.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 850123402 is about 29156.8757242610. The cubic root of 850123402 is about 947.3140760638.

The spelling of 850123402 in words is "eight hundred fifty million, one hundred twenty-three thousand, four hundred two".